StudioKoen

OK, I pasted your code into the htaccess file, above the existing code. I copied a user.ini file, and changed the code to this site. Uploaded all by FTP.
All is well now. Still do not know what created this problem though, but for now: everything OK.
Thanks a lot for your help!

Thanks a lot. I will try that.
But the thing remains: I do not see a use.ini file in the main directory.
I will send a screenshot by seperate mail.
thanks, Koen

Hello Adam,
I have just send the diagnostics rapport from the WF plugin.
Hope tot hear from you,

best regards, Koen

@bradvin. – Hi There. I come across the same error message as others:
Thumbnail Generation Alert!
There is a problem generating thumbnails for your gallery. Please check that your hosting provider has the GD Image Library extension installed and enabled.

I checked my host, but GD image library is installed and enabled.
I deactivated all plugins but FOOGallery and FOOBox, but the issue remains.
Running the testing gives the fore mentioned Error.
Is there an update to this situation?