Go here, and click "new thread" on the gray bar at the top right; solid? If you have any other questions, just post in here. The App. Format is automatic. If not, tell me and I'll post the format here. c:
Try following this thread for the time being. I'll have one of the Mods or an Admin with significantly more power than I take a look later; something may be wrong with the code or user privileges, as I just tried to start one myself and encountered the same error as you.
Here's the old profile format:
Name:
Nationality and Affiliation:
Rank(in your case I would put profession if you're a regular civilian. Otherwise, refer to the "medic ranks" posted in the Neutral App. sub-board.)
Character History: (Give a minimum fifteen-line [not sentence] backstory for your character. This can include basic history, birthplace, family, and so on.)
Situation/Example RP prompt: (Put your character in a situation, and demonstrate your roleplaying ability. Historical accuracy and knowledge is highly encouraged, as is literacy and grammatical correctness. For a neutral app., I would just drop your character into either an everyday situation for them in particular or give them a conflict, peaceful or otherwise, to confront. Again, adhere to a fifteen line minimum. There is no maximum.)
Keep coming back to this thread if you need help, and don't forget to follow the instructions in Nathan Whyte's thread I linked you to at the top if you need further help. It's dated, but the information regarding account registry is still accurate.