PSD Attachment Upload Problem - Resize Failed

[ifitsmedia]

I am having problems with attachments of PSD files in my forum.

When I try to upload a PSD file I get the following error:
Image resize failed due to your image library not having support for this image type.

Here are my settings:


I am using GD, and when I go to myforum/image.php?i=gd everything seems to be working because I can see an image.

When I go to admin --> Maintenance --> Diagnostics --> Upload and try to upload the same PSD file it works fine and does not detect any errors.

I don't know why it is trying to resize the PSD, when I have unlimited size enabled for PSD files, and a huge file size limit.

Any help would be greatly appreciated, this is driving me nuts.

--------------- Added [DATE]1299775039[/DATE] at [TIME]1299775039[/TIME] ---------------

Anyone?