Can't give Itrader to a seller

I have a small problem: last night, a DP member did some banners for me. The transaction went well, I got my banners and he got his money. The only thing left now, was to give him some Itrader. But I couldn't do this..I have tried several times, but I was keep getting the "Invalid deal URL" message, every time I tried submitting the comments and the Itrader..

Not to mention that the same thing happened today, too. So, can anyone please tell me what's wrong? Thanks!

 

To be able to leave an iTrader, the deal thread must be in the B/S/T forum, and not in the Freebies section.

 

Oh, ok. Had no idea that this might be the cause. Thanks for clearing things up for me.