Can't post images thru Attachment Manager

[msa]

Did you try with a few different files, out of curiosity?

Also, does the offending colon show up in the dialog box, or do you get an error message after the fact that says something like:

xxx.jpg: File is not an image

I meant to add: this error message can apparently occur if there is a mismatch between the vbulletin max upload size and the apache/web server max upload size. That would only occur if your image fell in what I guess is a fairly small range close to the max upload size (if there even is a mismatch). So if you cannot upload a much smaller image then this isn't the problem.