Issue is fixed by making sure you update to Opera 64.x. This issue was related to a version of Opera 63.x on windows.

Confirmed By Ashik too.

Hi Webxopt Just a brief explanation of the process. Just a thought. Am I supposed to put a full path in to the folder name, or do you assume that the named folder is in the /uploads/ folder? No, it's a really simple and basic script. What it does is grabs the source URL of the image itself. so, for example, the url might look like: http://yourdomain.com/wp-content/uploads/12345/img12345.jpg another img with URL: http://yourdomain.com/wp-content/uploads/my-images/img12345.jpg What the script does is just a simple string check, so it checks for the presence of that string in the skip_folders array() skip_folders = array( '12345' ); the above, noting that we haven't included a / before 12345, the script will search the URL for that string. Therefore, in the above URLS, you might want to only skip images in the folder 12345. The script will detect that string, it's present, so will skip it. However, because there's no slash, it will in the case of the 2nd URL, it will also see 12345 in the filename img12345.jpg, therefore it will skip that too. So we add a / at the beginning, so it will only then find /12345 and will ignore other files like IMG12345.jpg As i said, it's really quite basic, but does the job. Hope that explains it a bit better. :)

Sorry, correct zipfile here:

Hi Webxopt I have created a mu-plugin for you which will allow you to exclude specific folder names. Please download and unzip the attached zipfile. Then open up & edit the enclosed file: wpmudev-img-skip-smush-CDN.php Add the foldername you want to exclude (including the / before it.) to the array on line 29. private $skip_folders = array( '/foldername' ); Seperate each foldername with a comma , if you want to exclude multiple folders. Then upload this file to /wp-content/mu-plugins/ Now ANY folders named /foldername will not be uploaded to the SmushCDN. Hope this helps.

Hey Joseph Just letting you know this issue should now be fixed. I don't know why we never had any previous reports of this, but shouldn't be any problems now with Uppercase characters. :) Cheers

Updated version, fixes a fatal error under some circumstances.