A new default avatar may take a while to rez. Please be patient and give it a few minutes. You may try rebaking using "ctrl + alt + R" or a relog, after a little while. If, after a while, you still haven't rezzed, open your inventory and make sure you are wearing all of the default avatar. You can click the "Worn" tab at the top of the inventory window to see the what you are wearing and the folder where that outfit is located. Still having trouble? There are staff boards at the Welcome region...please try contacting someone for help.