Thanks for the explanation. My web host re-installed ImageMagick (server-wide). I tried to upload the files again and got Return Value: 1. See below. Is Return Value 1 a generic error code?
My web host person aked if I could show him the script so that he can have a look at the mod_sec rules which are in place for security. Which file contains this information?
I also followed your tip to install Coppermine manually. The following message resulted when I tried to upload a file from the manual installation:
The file 'albums/userpics/10001/barbara.jpg' can't be inserted in the album
Error executing ImageMagick - Return value: 1
Cmd line :
/usr/local/bin/convert -quality 80 -antialias -geometry 100x50
The convert program said:
File: /home/mattyorg/public_html/manual_coppermine/db_input.php - Line: 402