In Small Screen Mode, the thumbnails on the thumbnail page are always centered. Unfortunately, there are no configuration options to vertically align the thumbnails to the top of the gallery in Small Screen Mode. (thumbsVAlign is a Large Screen Mode option only.)

The best I can suggest is that you post your suggestion in the Feature Requests forum thread.
This keeps all the ideas together and ensures that they are not overlooked by the developers.
I do not know the likelihood of any suggestions being implemented in future versions but this is certainly the best place for all ideas.
Thank you.

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.
The workaround is to add your images in smaller batches (so try adding, say, 50 images at a time).
I hope this helps.

If you are creating or editing your gallery with JuiceboxBuilder-Pro, then you can remove the image filenames from the image titles by going to 'Images -> Titles -> Use None' from the drop-down menu at the top.

If you want to enter custom text for the image titles (or captions), then go to the 'Images' tab and click a thumbnail to reveal the input fields at the foot of the window.

If you want to hide the entire caption area (including the image titles, the image captions and the image numbers), then set captionPosition="NONE" in JuiceboxBuilder-Pro's 'Customize -> Caption' section.

I have viewed a few of your guitar galleries on my own iOS device (Mobile Safari, iOS 11.3.1) and all the ones I've viewed display and function OK (without any error messages).
If the problem happened "out of nowhere" (were the galleries were previously working OK but suddenly stopped working without you having changed anything yourself), then it sounds like something may have happened on your web server to cause the problem.
As everything seems to be OK at the moment (at least for myself), then it sounds like the problem may have been a temporary glitch on your server which has now been resolved.
If you are still seeing the "Config file not found." message, then try clearing your browser's cache before reloading your web pages to see if this helps.

Also, please note that the Juicebox module for Drupal is an unofficial plugin which we did not write ourselves and it is the module's own custom code which generates the config files and the structure of the galleries. As such, if you continue to experience difficulties, it might be worth posting in the Drupal forum where the author of the module should hopefully be able to help you out further.

I hope this helps (or at least points you in the right direction).
Please let me know how you get on. (Hopefully the problem was just a temporary server glitch which has now been resolved.)

No, the Button Bar can be positioned only via the buttonBarPosition and buttonBarHAlign configuration options.
Possible values for buttonBarPosition are OVERLAY, OVERLAY_IMAGE, TOP and NONE.
Possible values for buttonBarHAlign are LEFT, CENTER and RIGHT.
Please see the Button Bar Options section of the Config Options page for a full list of Button Bar configuration options.

Here are a couple of tips which might help.

(1) The <font> tag has been deprecated and is not supported in HTML 5. CSS should be used instead. (Please see this web page for further details.)
Try something like this instead:

<span style="font-family: futura;">Sahara Desert</span>

(2) If you like, you can specify a font for all gallery text via the galleryFontFace configuration option (in JuiceboxBuilder-Pro's 'Customize -> General' section).

(3) The font you specify (via CSS or galleryFontFace) will be displayed only if it is installed on the user's computer. Unless you are using a web-safe font (please see here for a list), it would be safer to use a web font (such as one of Google's free web fonts) if you want to be sure that your gallery text looks the same on everyone's computer. Please take a look at the Using Custom Fonts support section for details.

No worries.
I hope you get your problem sorted out.

Unfortunately, the direct download functionality does not work on iOS devices so Juicebox automatically hides the Download Button when an iOS device has been detected. (The Direct Download button should display and function fine on Android devices, though.)

Thank you for the update.
I'm glad we've been able to figure out the cause of your problem.
It's certainly safer to use only web-safe characters in image filenames (but you can still use whatever characters you like in image titles and captions).

It sounds like you might be referring to adding image to a gallery in JuiceboxBuilder-Pro (rather than actually uploading your images to your web server).

Unfortunately, JuiceboxBuilder-Pro can handle images of no more than 4095px x 4095px when creating a gallery. (This is true of all versions of JuiceboxBuilder-Pro, including the current version, v1.5.1.) This is a limitation of Adobe AIR (the platform on which JuiceboxBuilder-Pro runs). Adobe AIR uses Adobe Flash Player as its runtime environment and the largest image size which Adobe Flash Player can handle is 16,777,215 pixels. This equates to a square image of 4095 x 4095. Please see this web page for details.

If you have images larger than this maximum resolution, then you could perhaps do one of the following:

(1) You could resize your images first in an imaging program (such as Adobe Photoshop) before feeding them to JuiceboxBuilder-Pro. (If you do resize your images prior to using JuiceboxBuilder-Pro, be sure to deselect the 'Resize Images' checkbox on the 'Images' tab to ensure that JuiceboxBuilder-Pro does not resize your images again.)

(2) There are plugins available to create Juicebox-Pro galleries with other programs (such as Adobe Lightroom) which do not have the upper resolution limit of JuiceboxBuilder-Pro. You can find details of these plugins here.
If you have Lightroom, Photoshop or jAlbum, you might like to try creating your galleries with these programs as an alternative to JuiceboxBuilder-Pro.

You should certainly be able to add small images to a gallery, though.
As a test, I've just tried images of filesizes 16KB and 28KB and both images display in the gallery as expected.

If the problem is with uploading your images to your web server, then the problem likely lies somewhere between your FTP program and your web server and your web host should be able to help you further.

I hope these notes help to clarify things.

However, if you continue to experience difficulties, please try to describe your problem in greater detail (let me know exactly what you are doing when the problem occurs and what, if any, error messages are displayed) and, if possible, please upload some of the images you are having trouble with (zip them, upload them somewhere and provide a download link) so that I can try to replicate your problem and help further.
Also, if the problem is with JuiceboxBuilder-Pro, it might help to know what resize dimensions you are using so please let me know this too.
Thank you.

I'm sorry to hear that my suggestions have not helped.
I'm really not sure what might be causing your problem if it is not a default browser or file association issue.
If I think of anything else that might help, I'll be sure to post back.
In the meantime, the best course of action is to deselect the 'View in Browser' button and just double-click the 'index.html' file inside the gallery folder (as you are already doing).

This is possibly due to setting captionPosition="BELOW_IMAGE" in your 'scenics' gallery.

When captionPosition is set to OVERLAY or OVERLAY_IMAGE, the height of the caption area is variable (it will increase, if necessary, to accommodate long captions) up to a maximum value set via maxCaptionHeight (default value, 120px).

However, when captionPosition is set to BELOW_IMAGE, BOTTOM or BELOW_THUMBS, the height of the caption area is fixed at the maxCaptionHeight value so, unless you change the value of maxCaptionHeight (or the captionPosition), there will always be a reserved area 120px high below your images.

For reference, short descriptions of all the Caption Options and their possible values can be found here.

Just to clarify, the gallery's configuration options are stored in the 'config.xml' file.
If you open and edit a gallery with JuiceboxBuilder-Pro, the 'config.xml' file will be updated (with any new image data and modified configuration options) when the gallery is re-saved on the 'Publish' tab.
You will then need to re-upload the new version of the 'config.xml' file to the gallery folder on your web server (along with any new images and thumbnails you have added to your gallery).

When I go to '/scenics/index.html', I get an error 404 (file not found).
It looks like the gallery's 'index.html' file (inside the 'scenics' folder is missing). You'll need it to display the gallery on its own web page.
However, as long as all the other gallery files are present and correct, you can still embed the 'scenics' gallery into another web page by using the following embedding code:

<!--START JUICEBOX EMBED-->
<script src="/scenics/jbcore/juicebox.js"></script>
<script>
    new juicebox({
        baseUrl: "/scenics/",
        containerId: "juicebox-container",
        galleryWidth: "100%",
        galleryHeight: "600",
        backgroundColor: "#222222"
    });
</script>
<div id="juicebox-container"></div>
<!--END JUICEBOX EMBED-->

I'm glad you're making progress. Thank you for letting me know.
I hope you get on OK but if you get stuck with anything, just let me know and I'll do my best to help you out.