Avatar Error - Invalid File
 

I did a search and couldn't find the answer to this question (although I see an avatar error thread every year or so).

Whenever my users try to upload avatar, they get an invalid file screen. I attached a pic of the screen they get.

They've tried both local and linked images, all of them are smaller than 80x80, even a 50x50 file that's 2kbs in size.

How do I fix this? Sorry if this is a simple question but I haven't figured it out yet so....

Thanks in advance.

This only happens to Registered Users and not Admins, or does it happen to all user? Can you upload attachments or is it only avatars you can't upload? Are you try jpg and gif?

This is currently happening to everyone, all users. We can no longer upload avatars, whether jpg, jpeg, or gif. We don't have problems with attachments or insert image tool, just avatars.

The only change I can think of is that we switched our hosting service a few months ago. The avatars were working fine before that.

And are the avatars stored in the database or the filesystem?