Thread:Project:Support desk/Cannot upload files - no error messages/reply

This looks like POST data is being discarded and not arriving to PHP.

This have potentially several causes:
 * Wrong rewrite rules
 * Wrong $wgServer (the form points to an URL that redirects to another URL)
 * You attempt to upload a file larger than PHP post_max_size and upload_max_filesize (note that the actual usable size may be lower due to encoding)