I've just uploaded a largish GIF image to my wiki and I'm getting an error that says:
"Error creating thumbnail: Invalid thumbnail parameters"
I say largish but it's not really that big a file (4,865 by 3,300 pixels, 410 KB). The file uploads without other problem and I was able to manually create a thumbnail at the command line (on the server) using ImageMagick (which is what MW is set to use).
I couldn't find the phrase "Invalid thumbnail parameters" anywhere on the MediaWiki site. It's not clear from the error what "thumbnail parameters" might be "invalid". Any suggestions what might need to be fixed or adjusted?
This is MW 1.13.3 PHP 5.1.6 MySQL 5.0.45 ImageMagick 6.2.8.0-4.e15_1.1 CentOS 5.2