[Hall of Famer]

Well first of all, what version of this script are you using? If you are using Mys v1.3.1, you shouldnt have problem with image uploading unless the file extension is not supported(yes, it must be jpg, png or gif).

Umm another case with login issues... Does your friend use some kind of special characters in the username or password? At this point the script only supports standard alphanumeric characters, so if your username contains greek or spanish characters these wont work out. Also if your friend is not from the same country as yours, your host may have blocked the IP.