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Thank you for bringing this to my attention.

Unfortunately, the latest (and last) open-source version of CKEditor 4 (CKEditor 4.22.1, the version used within my unofficial update patch for Showkase v1.7.6) is no longer receiving updates and the long-term support versions of CKEditor 4 (which should be more secure) require a license for commercial use (which we don't currently have).
It looks like CKEditor 5 would also requires a commercial license for use within Showkase (being free only for open-source projects).

If you are willing to accept the security risks, then you can at least suppress the warning by adding:

config.versionCheck = false;

... to Showkase's showkase\admin\settings\ckeditorconfig.js file.

I don't know exactly what the security risks are (I have not yet been able to find details on CKEditor's website) or, indeed, which versions of CKEditor they affect.
It might actually be beneficial to revert to CKEditor 4.16 (from the Showkase v1.7.6 zip package). If you'd like to do this, just overwrite the showkase\admin\ckeditor folder on your web server with the showkase\admin\ckeditor folder from the Showkase v1.7.6 zip package. I genuinely don't know if this will help (with the security itself or the warning message) but it might be something you'd like to try.
As always, when making changes manually to files on your web server, I'd recommend making a full backup of your site first, just as a precaution.

It looks like we might need to stick with CKEditor 4.16 (from the official Showkase v1.7.6 zip package) or CKEditor 4.22.1 (from my patch) for the time being until the developers can formulate a more long-term solution.

Maybe there's a fork of the open-source CKEditor 4.22.1 somewhere on GitHub that might be a suitable replacement? I'll take a look.
I'll post back here if I have any further news on the subject.

I'm sorry to hear that you're having problems.

You'll need to contact your web host (the company that provides you with the web space that you uploaded your Showkase site to). They should be able to tell you what has happened to your site.
We do not provide any web hosting at all and have no way of knowing where you uploaded your Showkase site to (or, indeed, what has happened to it).

Two things that sometimes help with ERR_NAME_NOT_RESOLVED are clearing your browser's cache and flushing your DNS but as yourself and a few friends all experience the same thing, it sounds like these suggestions would not help in your case.

The first thing to do is to contact your web host and, if you have a custom domain name, check in with your domain registrar, too, in case your domain name has expired.

I hope this points you in the right direction.

That's odd.
I've just double-checked (with a fresh Showkase v1.7.6 installation and the patch files from my box.com link) and I uploaded a .webp image to the Showkase Library as a test without any issues. (The image uploaded via the upload module without any problems or error messages and, afterwards, it appeared on the Images tab as expected.)
It looks like the files are fine.

The three most likely things I can think of that might be causing your problem (and, therefore, things you could investigate) are:
(1) The patch files have been uploaded to the wrong location on your server.
(2) When uploading the patch files to your web server, your FTP program has not been set to overwrite existing files.
(3) Your web hosting account has server-side caching enabled and your web server is still using older, cached files rather than the new patch files you've recently uploaded. It might take some time for the new files to become active on your web server.

Check that you're uploading the patch files to the correct location on your web server. If, for example, you installed Showkase to your root directory, then you would have uploaded the contents of the 'showkase' folder (from the Showkase zip file) to your root directory. If this was the case, then you would upload the contents of the 'showkase' folder (from the patch zip file) to your root directory.

Also, make sure that your FTP program is set to overwrite existing files (so that the patch files replace their original versions).
If you integrated the patch into a Showkase folder on your computer before uploading, make sure that your copy action replaced (and did not skip) existing files.

Finally, make sure that your web hosting account does not have server-side caching enabled. (Check in with your web host. They should be able to help you with this.)

I'll keep my fingers crossed that one of these suggestions helps you out.
Please let me know how you get on. Thanks.

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

With the patch in place, there are no known issues with any version of PHP but if you run into any new problems, please let me know. Thanks!

You've not missed an update. The latest (current) version is still v1.7.6.

Unfortunately, I do not know if or when Showkase may next be updated and it does look increasingly likely that an official update is not forthcoming. Sorry I cannot be more specific just now but I don't make the decisions around here and I don't have any news at the moment.

Having said that, even though I'm not the author of Showkase and cannot release new official versions, I am still a member of the official support team and I'll continue to do my best to see that Showkase stays alive and kicking.

This might be a good opportunity to post a round-up patch containing all of the fixes and updates that I've posted in the forum over the past few months.

Please note that this is an unofficial patch and that you should use it at your own risk. I have tested it myself on a web server running PHP 8.3.6 but it has not undergone extensive testing by anyone other than myself.
Please be sure to make a full backup of your existing site before applying the patch.
The patch files are in a folder named 'showkase' (like the official Showkase zip file) so you can just upload the 'showkase' folder to your web server, overwriting your existing files.

Here is the changelog for the patch:

• Changed default body text on About and Basic pages for consistency across all page types

• Fixed PHP 8.1 incompatibility - implicit incompatible float to int conversion is deprecated

• Fixed PHP 8.2 incompatibility - dynamic properties are deprecated

• Introduced webp support

• Updated links in showkase.robots.txt file

• Upgraded CKEditor to v4.22.1

• Upgraded jsTree to v3.3.16

• Upgraded PHPMailer to v6.9.1 for Contact page

• Upgraded Plupload to v2.3.9

• Upgraded Smarty PHP Template Engine to v4.5.2

NB:
(1) This patch should be applied to Showkase v1.7.6 (Pro or Standard) only. It should not be used for any other version.
(2) This patch now requires that a minimum version of PHP 7.1 should be used. (The previous minimum version required was PHP 5.2.)

Patch file download link: https://app.box.com/s/lel919xayj6hnhrf8ju0apsfeowoocal

As always, just give me a shout if you need a hand with anything. I'll be here to help!

Please see this forum thread.

I posted a patch (in this forum post) which addresses issues relating to PHP 8.1 and PHP 8.2 (including the one you experienced).
The patch will allow run Showkase v1.7.6 to run on PHP 8.1, PHP 8.2 (and I've also tested it on PHP 8.3).

Apologies for the inconvenience. I hope the patch helps.

I notice that you are using a custom.css file (_themes/kosel/css/custom.css) which sets background-color: #E9E3D3; for #wrapper.
This will override the color set in the Showkase admin so you might need to remove this custom CSS for admin-set colors to work.

For anyone looking for WEBP support, please check out this forum thread.

@Anglican

It's possible but I really don't know. I'm not the author of Showkase and I don't make such decisions.

However, the patch really just duplicates the way Showkase handles GIF images, but for WEBP images. All the complicated stuff (the actual image processing) is done by native PHP functionality so the extra code required in Showkase to get it working is minimal and I don't see there being any adverse effects.

I hope it will be picked up by the Showkase developers but, if not, at least the patch is here for those that want to use it.

Sorry for the inconvenience.

This problem is caused by a deprecation in PHP 8.1: Implicit incompatible float to int conversion is deprecated.

Until Showkase is updated to address this issue, I've attached the fix to this post as a zip file. Just extract the zip file (it'll extract to a folder named 'showkase') and upload the whole 'showkase' folder to your own site, overwriting the existing source files.

The fix also addresses an issue relating to PHP 8.2: Dynamic Properties are deprecated.

You should not have any problems applying the patch but I'd recommend taking a complete backup of your site first, just in case anything goes wrong and you need to reinstate your original files at a later date.

I hope this helps.
Please let me know if I can be of any further assistance.
Thank you.

Thank you for posting your suggestion in the Feature Requests thread.
I don't know if or when this might be implemented officially but, in the meantime,you might like to try this patch that I created (attached).
It introduces .webp support to Showkase and allows .webp images to be uploaded via the upload module.
Just extract the zip file over your existing Showkase directory. The following files will be replaced:

• admin/classes/gallery.php

• admin/classes/imagesizer.php

• admin/classes/thumbnail.php

• scripts/plupload/queue.js

Notes:

(1) This patch is not official. It was made by myself, not by the author of Showkase. As such, it has not gone through a rigorous testing regime (although I've tried it out myself and it seems to work fine) and you should use it at your own risk. Be sure to make a full backup of your site first, just in case you need to reinstate your original files at a later date.

(2) The upload module (the third-party Plupload module) only resizes .jpeg and .png images client-side so .webp images are treated the same as .gif images (i.e. they are not resized when uploading). Either be sure to resize your .webp images before using them in Showkase or, if using a Juicebox-Pro gallery, go to 'Site -> Customize Viewers -> Juicebox-Pro (Edit) -> Pro Viewer Options -> Multi-Size Images (Pro)' and select the 'Medium image resize' checkbox.

(3) The files named above have been modified so, if you have made any other modifications to these files (from the stock Showkase v1.7.6 versions), then your modifications will be lost and you'll need to apply them to the files again.

(4) Please use this patch only if you are using Showkase v1.7.6. The original files that I modified were Showkase v1.7.6 stock files. Using this patch on a previous version of Showkase may break other functionality.

I hope this helps.