Re: BuddyPress.org avatar upload restrictions?
It’s a problem with buddypress.org’s hosting situation. As @crashutah alludes to, buddypress.org shares user database with wordpress.org, which at the moment has pretty severe restrictions on the kinds of files that can be uploaded.
I’ve spoken with some of the staff at Automattic about the problem, and they’ve informed me that the general restrictions on uploads at wordpress.org will be lifted relatively soon. At that time, the avatar problem here will be fixed.
I can’t implement any other fixes on buddypress.org at the moment because of the fact that it’s running a WP 2.9.x installation, which must be upgraded before any more fixes go up. That upgrade process is going to be very complicated. I’m working on it.
In the meantime, I agree that it’s not a great first impression, but I encourage you to download the software and check it out.