The drop shadow for the captions is not configurable from within the JuiceboxBuilder-Pro interface.
Edit the 'jbcore/classic/theme.css' file in a plain text editor and remove line 215:

text-shadow: 1px 1px 2px rgba(0,0,0,0.5);

(The line number refers to Juicebox-Pro v1.2.0.)

Your gallery scales OK in Firefox on my PC (in that the size of the main image and the number of thumbnails displayed changes dynamically as the size of the browser window changes). Please note that although the number of thumbnails displayed changes, the actual size of the thumbnails does not.
Your web page has scroll bars because the total width and height of all elements on your page add up to greater than the width and height of the browser widow.
For example, your gallery has been given a height of 100% but your page also has a navigation menu header was has a finite height to add to this.
If you wish to have a resizeable gallery with a header and no scroll bars, please see the Using a Resizable Gallery with a Header section of the Juicebox - Embedding Guide, specifically the View Resizable Gallery with Top Menu Example. You can view the source of the page in your browser and modify it to suit your needs.

As I mentioned above, I have already notified the developers of this but I would also encourage you to post feature requests in this forum thread. It keeps them all together and ensures that they are not overlooked. Thank you.

You could point each Juicebox gallery created by svManager towards the master 'jbcore' folder by editing the 'svmanager/plugins/juicebox/jbmaster/index.php' file in a plain text editor and changing line 27 from:

<script src="jbcore/juicebox.js"></script>

... to:

<script src="http://www.example.com/svmanager/plugins/juicebox/jbmaster/jbcore/juicebox.js"></script>

... changing 'www.example.com' in the example above to your own domain name.
The 'jbcore' folders in each gallery folder would then become redundant (though deleting them may have unwanted knock-on effects within the svManager admin area which expects the folders to be there).
Please note that the line number refers to svManager v1.8.3.

If creating your Juicebox galleries with Lightroom and importing them into svManager, you would need to manually alter the path to the 'juicebox.js' file (in each gallery's 'index.html' file) to point to the master 'jbcore' folder within your svManager installation. However, by doing so, you would be unable to view the gallery locally and it would function only when uploaded to your web server.

Yes. Many bugs were fixed in v1.2.0.
Please see the Juicebox - Version History for a full list of changes.

No. Just make sure that all galleries are of the same version. Otherwise, if multiple different 'juicebox.js' files are loaded on the same page, one will take precedence over the other(s) and you may experience unexpected results.
If the WP-Juicebox plugin is enabled, then the 'juicebox.js' file from within the plugin will already be loaded on the page and you will not need to include the call to 'juicebox.js' within your manually embedded Juicebox gallery.

That is correct. svManager (unlike WP-SimpleViewer) creates an individual folder for each gallery and copies the master 'jbcore' folder into each gallery folder.

This is not possible through any of svManager's preconfigured options. It would require modification of the svManager source files.

I am glad that your problem has been resolved.
Thank you for posting back to let me know.

First of all, please see this Juicebox support section on Screen Modes.
Setting showLargeThumbs="FALSE" will initially hide the thumbnails in Large Screen Mode.
If you wish to prevent the viewer of your gallery from ever being able to show the thumbnails, you should also set showThumbsButton="FALSE".
Setting showSmallThumbs="FALSE" will disable both the thumbnail page and the thumbnail button in Small Screen Mode.

All galleries created by WP-Juicebox share the same 'jbcore' folder.
This allows the user to upgrade all galleries in a single action, when a new version of Juicebox is released, by replacing the 'jbcore' folder in the 'wp-plugins/wp-juicebox/' folder.
When WP-Juicebox is enabled, the 'wp-plugins/wp-juicebox/jbcore/juicebox.js' file is automatically loaded on the page.
Therefore, if embedding galleries manually into WordPress (instead of using WP-Juicebox), then you should deactivate WP-Juicebox.

When embedding your gallery manually, your WordPress theme is inserting <p>, </p> and <br /> tags throughout your embedding code.
If you are not already doing so, try inserting your embedding code into your post with the method of entry set to 'HTML' rather than 'Visual'.

Sure. I can confirm that your suggestion of adding:

# Juicebox skip/bypass rule
RewriteCond %{REQUEST_URI} ^/wp-content/plugins/wp-juicebox/ [NC]
RewriteRule . - [S=13]

... to the root .htaccess file works fine, although I had to change it to the following in my own WordPress installation:

# Juicebox skip/bypass rule
RewriteCond %{REQUEST_URI} ^/wordpress/wp-content/plugins/wp-juicebox/ [NC]
RewriteRule . - [S=13]

...  so Skippy should use:

@AITpro

Thank you for your input. Hopefully your suggestions will solve Skippy's problem.

This is a known issue (a long Gallery Title running into thumbnails in Small Screen Mode).
A bug report has been logged and we are currently investigating possible solutions.
Hopefully, a fix will be included in the next version of Juicebox.
At the moment, the only workaround would be to use a shorter Gallery Title.

Were all 7 successful galleries made with JuiceboxBuilder-Lite v1.2.0 or were they made with a previous version of JuiceboxBuilder-Lite prior to attempting to create Gallery #8 with v1.2.0?

Do the thumbnail images display OK on the 'Images' tab or do the question marks appear only in the live preview window on the 'Customize' tab and in the generated gallery?

If the problem occurs only with certain images (i.e. those for Gallery #8), perhaps you could upload several of the original images and provide a download link so that I can try them for myself and see if I can replicate the problem on my own system. Thank you.