Looking online it seems that the "upload:" tag for aavatar upload in the database dates back to IPB2 2.0PF3 pre-release, as here's some code from IPB products:
Code:
Content visible to verified customers only.
It seems that uploads could be tagged like that depending on when your install dates from, and what upgrades you've done from that.
OmegaTron: I'd suggest that the one line fix is added to the next release for compatibility
