PE2K Front DeskForum announcements will be posted here. Any questions, suggestions or ideas concerning the forum or the website should also be posted in here. If you need help on your avatar or signature, or help on using the forum, this is the place to go.
Invalid file just means that. Did you check that your avatar follow the size restrictions AND file format restructions? If it's upload failure, it might be a problem with the server, but I don't think it is at this point in time anyway, meaning it could be your connection.