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I'd be happy to investigate further but it would help if I had access to your web server and Showkase site.
If you are agreeable to this, then please let me know and I will send you an email address where you can forward me your FTP and Showkase login details.

In the meantime, how are you setting your PHP directives? It might be worth checking (with phpinfo() to see if the new values are actually being used.

Also, try running the Showkase Server Compatibility Test. Even if you ran the test before installing Showkase, please try again in case your web host has made any changes recently. The results might give us a clue as to the nature of the problem.

Thanks for the additional information.

The line you noted above sets several attributes for each image so it certainly looks like my initial suggestion regarding max_input_vars might be in the right ballpark.
Try increasing max_input_vars further (to something much larger such as 2000) to see it this solves the problem.
If I was out by just one and max_input_vars needs to be 7 x the number of images, then 1200 would not be enough for a 180 image gallery.
I was pretty sure that 6 x the number for images is all that should be required when I posted earlier but there is no harm in trying a larger amount in case I was wrong. What you say in your latest post certainly points towards a low max_input_vars being the cause of the problem.

I have just done some testing of my own and in a gallery of 33 images, a max_input_vars of 200 results in an undefined offset (when clicking 'Save' on the 'Images' page tab) but a max_input_vars of 201 works fine. Neither 200 nor 201 divide exactly by 33 but they are both just over 6 so trying a larger value (such as 7 x the number of images) might yet work.

Also, if you have not yet tried increasing your PHP memory_limit, this might also be worth a shot.

Unfortunately, there are no dedicated keyboard shortcuts for Showkase interface buttons.
However, you might like to 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 but this is certainly the best place for all ideas.
Thank you.

Edit:
Many thanks for posting your suggestion in the Feature Requests forum thread.

You're welcome!

I'm glad you've been able to left-align the thumbnails to your liking. Thank you for sharing your solution.

If you are looking to always have the top of the thumbnails flush against the bottom of the main image, then the only way to do this using the available configuration options would be to set imagePadding="0" and thumbPadding="0" and then either set imageScaleMode="FILL" (probably not appropriate for your gallery) or ensure that your images are large enough that they will always need to be dynamically scaled down slightly by Juicebox to fit within the gallery's image area when the gallery is displayed.

Otherwise, you could perhaps use some custom CSS such as the following to move the thumbnail container (and its navigation buttons) up slightly. (However, I would always recommend using the available configuration options where possible as Juicebox will not know of any custom CSS modifications that you make. Juicebox may expect certain elements to be in certain places and shifting them around via CSS may lead to unforeseen problems and unwanted knock-on effects.)

.jb-idx-thumbnail-container, .jbn-nav-button  {
    margin-top: -20px !important;
}

Again, this will work only if all your images are larger than the gallery's image area. If any of your images are smaller than the image area and are not dynamically scaled up (check your gallery's imageScaleMode value), then there may be a gap below your main images. (There is no easy way to always just attach the top of the thumbnails to the bottom of the main image.)

Thanks for sharing!

It's often enough to just press Ctrl + F5 to reload the current page from the server (but, if all else fails, clearing the browser's cache is certain to solve any browser caching issues).

You're welcome!

The ability to auto-hide thumbnails was introduced in Juicebox-Pro v1.5.0 (please see the Version History for a list of changes between versions) but your gallery currently uses Juicebox-Pro v1.4.4.1.

Your Showkase-Pro v1.6.1 installation already comes bundled with Juicebox-Pro v1.5.0 so all you need to do to upgrade your gallery is re-publish your site (just click the 'Publish' button).
You may have to clear your browser's cache afterwards before reloading your gallery's web page.

This should solve your problem.

The "email us" link in the Support Overview is a 'mailto' link.
A 'mailto' link will open your computer's default email program and start an email to the specified email address.
If you do not use an email program (such as Outlook or Thunderbird) on your computer and, instead, use webmail (via a browser interface), then nothing will happen when you click on a 'mailto' link.

The email address for email support is showkase@simpleviewer.net. It can be seen in the browser's status bar when you hover over the "email us" link. You can also right-click the link and select 'Copy Email Address' which you can then paste into a new email to send to us. Alternatively, you can post any queries you have here and I'll do my best to help you out.

I expect the grey color you are seeing is coming from line 386 of the '_themes/maribo/css/styles.css' file (the 'background-color' entry in the following section).

.gallery-listviewer .image-wrap {
  /* intrinsic ratios image sizing */
  position: relative;
  height: 0;
  background-color: rgba(0, 0, 0, 0.1);
  margin-bottom: 2em;
}

I'm not sure about the origin of this 'background-color' entry (a neutral grey might have been chosen to prevent an even more distracting flash of either black or white in certain browsers) but try removing the 'background-color' entry, changing the color to match the background color of your website or change the 'rgba' value to be completely transparent: background-color: rgba(0, 0, 0, 0);
This should hopefully solve your problem.

Please note that the line number above refers to the current version of Showkase (v1.6.1).

(1) You can change the configuration of the CKEditor toolbar in the 'showkase/admin/settings/ckeditorconfig.js' file.
If you'd like to use the 'Full' toolbar, change line 32 from:

config.toolbar = 'Showkase';

... to:

config.toolbar = 'Full';

Otherwise, you can configure a custom toolbar by changing one of the templates in the file ('Showkase', 'Basic', 'Full') and making sure that line 32 selects the template you wish to use.
Showkase incorporates CKEditor v4.5.7 so please refer to the documentation here: http://docs.ckeditor.com/#!/guide/dev_toolbar
Also, please note that the line number above refers to the current version of  Showkase (v1.6.1).

(2) The Showkase Library was designed to accept images only (files with extensions jpg, jpeg, gif and png).
All Library and upload functionality is based around images. When selecting the 'Library -> Images' tab or clicking a 'Browse Library' button, only images are displayed. It would probably take quite a lot of modification to several source files to allow other files types to be accepted by the upload module and for functionality to not be broken anywhere in the interface. Care would need to be taken to filter out non images for Library selections (such as the theme 'Logo') as the file may end up as a 'src' attribute in an <img> tag.
If you need to incorporate a pdf file in your site, the best thing to do would be to upload it to your web server manually and add your HTML code as necessary in the editor (as you are currently doing).

I hope this helps to clarify things for you.

That's great! Thank you for letting me know.

If you want to remove the dotted line below links in the Maribo theme, add the following CSS to your 'showkase/_themes/maribo/css/custom.css' file:

a {
    border-bottom-style: none !important;
}

Just to clarify, in the current version of Showkase (v1.6.1), the folder name is taken from the page name on the 'Pages' tab (shown in the tree) rather than the 'Page title' in the page settings.

I have just double-checked this functionality in a Showkase-Pro v1.6.1 site of my own and everything seems to work as expected. I am unable to replicate the problem you reported.

I do not know why your folder names are not changing to reflect your page names but here are a few things to check and try.

(1) You say the problem seems to have started recently. If you have not made any changes yourself (other than to your Showkase pages), then perhaps your web host has changed something on your server or web hosting account that is somehow contributing to your problem.
Please try installing and running the Showkase Server Compatibility Test to check that your server has all the features Showkase needs. If any of the tests fail, there are troubleshooting tips on the test's support page (link above).
Even if you ran the test before installing Showkase, please try again in case your web host has made any changes recently.

(2) Try going to 'System -> Repairs' and clicking the 'Repair' button to rebuild the page records. This might help.

(3) The problem could possibly be related to permissions. Try going to 'System -> Files' and click the 'make writeable' next to the folders in question.

(4) I notice that the pages you referred to in your post above are not represented in the navigation menu. Are they hidden or is this part of the problem? Try moving the pages in the tree on the 'Pages' tab to a different location (just temporarily), click 'Save' and 'Publish' and then move them back to where you want them to be (and, again, click 'Save' and 'Publish').

(5) After changing a page name (on the 'Pages' tab) is there a new folder with the new name as well as the old folder?

(6) Does the functionality of Showkase still seem to work OK (even though the folder name is not changing on your server)? If you make any changes to one of the Showkase pages whose folder names do not change, are the changes applied successfully?

Maybe the suggestions in #1, #2, #3 and #4 above will help.
Otherwise, the additional information from #5 and #6 might at least point us in the right direction.