I've just tried viewing your gallery in a couple of different browser (Chrome and Edge) than the one I was using before (Firefox) and the gallery loaded all your images in both browsers without any problem.

I'm sure you'll have much more knowledge about web servers than I do but, if the problem was a server-related issue, I would expect to see the same results that you describe. It sounds like we can rule out the web server as being a probable cause (at least for the time being).

If you have exactly the same problem in all your browsers, then the problem is unlikely to be a browser specific problem.

This leaves your internet connection (please check to see if it is stable at the moment) and your computer as two other variables in this equation.

There really seems to be no problem with the gallery on your server (at least from my perspective) and your images load quickly in all browsers I've viewed your gallery in myself (with none failing to display).

Maybe you have some security software installed which is somehow interfering with the loading of your gallery images. Try temporarily turning off any security software that you have installed (at your own risk) to see if this makes a difference.

Also, what happens when you try to display the gallery images directly in your browser (bypassing Juicebox-Pro).
For example, try opening:

https://foto.motoko.eu/2018_winter_cz/images/Olesnice_bezky_1.jpg

... and then

https://foto.motoko.eu/2018_winter_cz/images/2018-02-02-DSCN0018-truck-z-lanovky.jpg

... etc.
Do they all display fully or do some fail to display (like in the gallery)?

This might not be an easy task to achieve (and I do not know of anyone who has done this).

You could certainly use the Juicebox-Pro API to detect when the last image in the gallery has been reached and then run whatever custom JavaScript code you like.

var jb = new juicebox({
    containerId: "juicebox-container"
});
jb.onInitComplete = function() {
    var count = jb.getImageCount();
    jb.onImageChange = function(e) {
        if (e.id === count) {
            alert('Last image in gallery has been reached.');
        }
    };
};

You'd just need to change the JavaScript alert for a command to load your next gallery page, for example:

window.location.href = 'https://www.example.com/index.html';

Unfortunately, there is no API method to check (or track) the current AutoPlay status so that only way to detect if AutoPlay is on or off is to check if the 'jb-status-playing' CSS class is present on the 'jb-bb-button-auto-play' CSS class.

var jb = new juicebox({
    autoPlayOnLoad: "TRUE",
    containerId: "juicebox-container",
    showAutoPlayButton: "TRUE"
});
jb.onInitComplete = function() {
    var count = jb.getImageCount();
    jb.onImageChange = function(e) {
        if (e.id === count && $('.jb-bb-btn-auto-play').first().hasClass('jb-status-playing')) {
            alert('Last image in gallery has been reached via AutoPlay.');
        }
    };
};

You could then add a delay (ideally the same as the Juicebox-Pro displayTime value) to allow the last image to be seen before loading the next gallery.

var jb = new juicebox({
    autoPlayOnLoad: "TRUE",
    containerId: "juicebox-container",
    showAutoPlayButton: "TRUE"
});
jb.onInitComplete = function() {
    var count = jb.getImageCount();
    jb.onImageChange = function(e) {
        if (e.id === count && $('.jb-bb-btn-auto-play').first().hasClass('jb-status-playing')) {
            window.setTimeout(function() {
                alert('Last image in gallery has been reached and 5000ms have elapsed.');
            }, 5000);
        }
    };
};

There might be some further pitfalls to avoid and tweaking to do but I hope that this points you in the right direction.

As long as your files and folders are actually where you say they are on your web server and that your gallery's XML file inside the 'illumination' directory is named 'config.xml', then your embedding code looks to be OK.

First of all, try clearing your browser's cache before reloading your gallery's web page to make sure that your browser is using the most recent versions of your gallery files (and not older, cached versions).

Next, if yo have edited your gallery's 'config.xml' file manually, please check to see if the file contains any syntax errors by opening it directly in a web browser. If there are any errors, the browser will tell you the first error in the file and at whih line it occurs.

If this does not help, then try reuploading your gallery's 'config.xml' file to be sure that it is complete and not corrupt (which may have happened if the initial upload was somehow interrupted).

Also, please check out the FAQ which deals with the 'Config file not found.' message.
When I view my gallery I see the message 'Config file not found'. How do I fix this?

If none of the above helps, then please post the URL to your gallery's web page so that I can see the problem for myself and hopefully help further.
Once I am able to see your gallery live on your web server, I should hopefully be able to determine the cause of the problem and propose a solution.

I'm glad you're getting on well with Juicebox-Pro and that you've been able to reach a suitable resolution/quality/filesize combo for your images.
Thank you for letting me know.

I'm glad that you've been able to get JuiceboxBuilder-Pro up and running again.
Thank you for letting me know.

Here are some notes that might help to clarify a couple of things.

The problem was likely to be due to adding a large number of images to the gallery at once.
If you are trying to add many images to JuiceboxBuilder-Pro at once, then Adobe AIR (the platform on which JuiceboxBuilder-Pro runs) may not be able to allocate enough memory for the task at hand. Even if your computer has plenty of free RAM, Adobe AIR applications are limited to around 1GB of memory allocation. As you have discovered, the workaround is to add your images in smaller batches.

Unfortunately, the safe limit will be dependent on the filesize of the source images so I can't really recommend a maximum number of images to add.
If your source images have similar filesizes, then try adding different numbers of images to a new gallery (so that this test does not interfere with your existing gallery). A little trial and error should soon let you know what is safe.

The 'config.xml' file is the gallery's configuration file which stores the gallery's configuration options and the image data.
When a gallery is created with JuiceboxBuilder-Pro, the 'config.xml' file is generated inside the gallery folder (alongside the 'jbcore' folder).

I hope you're able to recreate your gallery without too much trouble.

You're welcome.

Here are some notes which might help to clarify a couple of things further.

If a gallery is embedded in an existing web page alongside other content, then it can be expanded to fill the browser window.
Try expanding this sample gallery by clicking the Expand Button on the gallery's Button Bar (the 2nd icon from the left).
If a gallery has dimensions of 100% x 100% and is on a web page of its own, then the only way a gallery can be expanded is if you set useFullscreenExpand="TRUE" (in JuiceboxBuilder-Pro's 'Customize -> Lite' section), in which case the gallery will be expanded to fill the entire screen (as long as the browser supports the Fullscreen API) rather than just the browser window.
Incidentally, useFullscreenExpand="TRUE" can be used on embedded and full page galleries.

That's the basic premise, yes, but more specifically, SMALL images (if available) will be used for the gallery's main images if the gallery is displayed in Small Screen Mode (i.e. if screenMode="AUTO" and the gallery is being viewed on a mobile device or if screenMode="SMALL").

I'm just referring to the way that the image would be displayed if it was not dynamically re-orientated by the program being used to display it (i.e. the way the image would be displayed if it had no EXIF orientation flag and the program being used to display it has no information on how it should be oriented). If you re-save an image in an imaging program such as Adobe Photoshop, stripping out all EXIF information during the process, and then view the image (in any program afterwards), then you'll see the image as JuiceboxBuilder-Pro does.
EXIF orientation can be a bit of a minefield at the best of times and JuiceboxBuilder-Pro chooses not to read or use the EXIF orientation flag (but offers users the opportunity to rotate images if necessary). Take a look at this article. It's a little old now but it provides some interesting information on how complex applying an EXIF orientation flag can be and how there can be very little consistency between different platforms and programs with regard to this matter.

No problem.

You're welcome!

JuiceboxBuilder-Pro is capable of generating three different image sizes (so that Juicebox can display the most appropriate size depending on the device being used to view the gallery). We call these 3 sizes SMALL, MEDIUM and LARGE in the 'Set Image Sizes' control panel as the SMALL set of images will be used when the gallery is displayed on small screen devices (mobile devices) and the LARGE set of images will be used when the gallery is displayed on large screen devices (desktop computers). This is not strictly true (the actual logic is noted here) but it gives you an idea what the 3 images sizes are for. There is no need to display a LARGE image (wasting bandwidth and taking longer to load) when a SMALL image will do.

I suggested using Small Screen Mode as it is the only way to have thumbnails and main images on separate pages. However, as I have mentioned, Small Screen Mode was designed for small screen devices (to give the main images more room to be displayed on mobile devices where screen real estate is usually limited) which is why SMALL images will be used if they have been generated.

Take another look at these two support sections and hopefully things will fall into place.
Screen Modes: https://www.juicebox.net/tour/gallery/#screen-modes
Multi-Size Image Support: https://www.juicebox.net/support/multisize/

Your screenshots show that:
(1) The 'Resize Images' checkbox is deselected
(2) The 'Use Watermark' checkbox is selected

As the 'Resize Images' checkbox is deselected, JuiceboxBuilder-Pro will not resize your source images (so the 'Max Width' and 'Max Height' in the 'Set Image Sizes' control panel are ignored).

However, because the 'Use Watermark' checkbox is selected, JuiceboxBuilder-Pro does need to process the images (to add the watermark) so the 'Quality' setting is used when the new watermarked images are generated.
If you find that your gallery images are not of a high enough quality, then try increasing the 'Quality' from its default value of 80 to something higher. Maybe try 90 instead. Above 90, the law of diminishing returns usually kicks in, giving little visual quality improvement but increasing the filesize significantly. However, trial and error will likely allow you to achieve the best balance between quality and filesize.

Also, as the the 'Resize Images' checkbox is deselected, there will be only one set of images in your gallery (technically the MEDIUM images but don't worry about what they are called... they can be whatever resolution you want them to be) which will be used under all circumstances.

If you encode the ' character as %27 in the imageURL, thumbURL and linkURL entries in the gallery's 'config.xml' file, the images should hopefully display OK.
For example, for an image with the filename gallery'image.jpg, use:

imageURL="images/gallery%27image.jpg"
thumbURL="thumbs/gallery%27image.jpg"
linkURL="images/gallery%27image.jpg"

I have notified the developers of this but, as I have mentioned previously, if you use only web-safe characters for image filenames, then you will have no problems in either JuiceboxBuilder or on a web server.

JuiceboxBuilder does not read the image's EXIF orientation flag and dynamically rotate the image. It just displays the image as is. If necessary, you can rotate the image within JuiceboxBuilder via the rotate button near the lower right corner of the 'Images' tab (after clicking the relevant thumbnail to reveal the input fields at the bottom of the window). If this does not help, then one possible workaround would be to re-save the image in an imaging program (such as Adobe Photoshop) stripping out the EXIF data and, then, if necessary, rotate the image so that it is visually oriented correctly (inverting the actual aspect ratio rather than introducing a new EXIF orientation flag) before feeding it to JuiceboxBuilder. I realise that this will add a few steps to an existing workflow but it should help.

If you like, you can post suggestions for future versions in the Feature Requests forum thread.
This keeps all the ideas together and ensures that they are not overlooked by the developers. Thank you.

If you have trouble figuring out where the problem is in a manually edited 'config.xml' file, then try opening the file directly in a web browser. The browser will usually tell you what and where the problem is in the file.

Please take a look at the Embedding Multiple Galleries support section (specifically the View Multiple Galleries on One HTML Page Example).

When embedding multiple galleries on a single web page, you'll need to use either a configUrl (to point to different configuration files) or a baseUrl (to point towards different gallery folders) in each gallery's embedding code. (Short descriptions of these embedding options can be found here.)

The online example embeds multiple galleries using the baseUrl method of embedding (documented here).
Essentially, you would keep each gallery in its own unique folder, upload the complete gallery folders (not just the contents) to your web server, and use a baseUrl in each gallery's embedding code to point towards the gallery folder. (The instructions here give an example.)

If you continue to experience difficulties embedding multiple galleries on a single web page, then please post back with the URL to your web page so that I can take a look at the problem for myself and help further. Thank you.

Yes. With Juicebox-Pro, you can create as many individual galleries as you like. However, if you would like to link them all together (with a navigation menu), then you would need to do so manually following the examples in the Embedding Multiple Galleries support section.

If you are looking for an automated solution to creating and listing multiple galleries, then you might be interested in another one of our products, namely Showkase.

Showkase is a PHP web application (installed on your web server instead of your computer) which allows you to create a complete portfolio web site (integrating multiple galleries) online.
Showkase has full support for Juicebox-Pro and the galleries can be created within the application itself in a web browser interface (or created with JuiceboxBuilder or the Juicebox plugin for Lightroom and imported).

You can create Gallery Index pages and have as many galleries listed on each Gallery Index page as you wish.
Each gallery is represented by a thumbnail image with the gallery title displayed below and the gallery is opened when the user clicks on the image.
Demo sites created with Showkase can be found here and a sample Gallery Index page can be found here.

Showkase can also create non-gallery pages (About, Basic and Contact pages) where you can add information about yourself (or any other content you like).
All of this is done automatically within the Showkase interface without the need for any manual coding at all.

Showkase can be purchased as Showkase-Standard (which comes with Juicebox-Lite, the free version) or Showkase-Pro (which comes with Juicebox-Pro).
The only difference between Showkase-Standard and Showkase-Pro is the bundled viewer (Juicebox-Lite vs Juicebox-Pro).

As you already have Juicebox-Pro, you could purchase Showkase-Standard (if you wanted to) and integrate your Juicebox-Pro files by following the Installing a Pro Viewer instructions.

More information on the differences between Juicebox and Showkase can be found in this forum post.

If you set captionPosition to OVERLAY or BOTTOM (or possibly even BELOW_THUMBS, depending on where your thumbnails are positioned), then the caption area will span the entire gallery rather than just the image.
captionPosition can be found in JuiceboxBuilder-Pro's 'Customize -> Caption' section.

You can also give the captions a little more horizontal room by removing the image number from the caption area (by setting showImageNumber="FALSE") as space is normally reserved at the right hand side of the caption area for the image number (e.g. "2/50").

Here's what I usually recommend for users having problems with JuiceboxBuilder-Pro.
It sounds like you might already have tried most of the suggestions but perhaps the additional notes regarding security software and user accounts will help.

(1) Uninstall JuiceboxBuilder-Pro.
Mac: Delete the 'JuiceboxBuilder-Pro' file from the Applications folder and empty your Trash.
Windows: Use the uninstaller in the 'Control Panel -> Programs -> Uninstall a program...' list.

(2) After uninstalling JuiceboxBuilder-Pro, please check that there are no files are left behind (even from a failed installation) by manually deleting the following folders from your hard drive:
Mac:
/Users/Username/Library/Application Support/Adobe/AIR/ELS/JuiceboxBuilder-Pro
/Users/Username/Library/Preferences/JuiceboxBuilder-Pro
Windows:
C:\Program Files (x86)\JuiceboxBuilder-Pro
C:\Users\Username\AppData\Roaming\Adobe\AIR\ELS\JuiceboxBuilder-Pro
C:\Users\Username\AppData\Roaming\JuiceboxBuilder-Pro
C:\Users\Username\Documents\JuiceboxBuilder-Pro
You may need to show hidden files to find some of the above locations in Windows File Explorer.

(3) Also, please follow the procedure above (Steps #1 - #2) for JuiceboxBuilder-Lite, too (if you have it installed).
JuiceboxBuilder-Lite and JuiceboxBuilder-Pro can both be installed and run side by side on the same computer but, being that you are experiencing problems, it might be wise to completely clear your system of all JuiceboxBuilder files before trying to reinstall JuiceboxBuilder-Pro.

(4) Uninstall Adobe AIR (again, via the control panel).

(5) Reinstall Adobe AIR (as an administrator).
You can download the current version of Adobe AIR from here.
When reinstalling Adobe AIR, instead of just double-clicking the 'AdobeAIRInstaller.exe' installation file, right-click the file and select 'Run as administrator'.

(6) Reinstall JuiceboxBuilder-Pro following the instructions here.

(I realise that you are using a Windows PC but I've included notes for Mac above, too, in case any Mac users are experiencing similar issues and are reading this forum thread.)

Hopefully this will help.
If not, then here are a couple of other things to try that might help.

(1) Try temporarily turning off any security software that you might have installed (or make an exception within the software for the JuiceboxBulder-Pro executable file) in case this is somehow interfering with the functionality of JuiceboxBuilder-Pro.

(2) Try creating a new User Account (make sure it is an Administrator Account), log into this new account and try installing and running JuiceboxBuilder-Pro from there.

I hope that the suggestions above help.
Please let me know how you get on.

[Thread locked. Conversation continued in this forum thread.]

Just follow the module's own installation instructions (here) but using the 'jbcore' folder from the Juicebox-Pro v1.5.1 zip package ('juicebox_pro_1.5.1/web/jbcore/').
If you have already installed the module with Juicebox-Lite, just overwrite the files in the your '/sites/all/libraries/juicebox/' directory with the contents of your 'juicebox_pro_1.5.1/web/jbcore/' folder.