Forum:MIME Type

What does this error message mean? "Files of the MIME type "application/x-php" are not allowed to be uploaded."

I have been moving images from Wikipedia and this is the only one that has been giving me troubles: File:Map of Baden (1806-1945).png. I tried renaming it on my harddrive, but it still won't accept it, so I guess it's not a naming issue.

Thanks,

Lanica 15:00, April 23, 2010 (UTC)