I am unable to select a userpic for my profile on my blog. When I click on the link I get a list of existing assets and the option to upload new ones. The files upload fine and can be viewed in full at their respective url (ex: http://www.justanotherhacker.com/mt-static/support/uploads/tribalskull.jpg ), but does not have a preview available. Selecting the image I want and clicking save does not appear to change my userpic. I do not get it displayed in the user edit page, the blog "home" page summary, nor when making a comment.
Any suggestions? My initial suspicion falls on the GD libraries or something similar, with a supressed error or silent die, but I haven't dug into the codebase to confirm.
Reported on Movable Type 4.2