In my case, I run the client as administrator and then select a character. I check the TP to see if I can sell. If the page comes back blank I log out completely. I then log back in and select the same character. Chances are it will now load up the selling page and I can get some trading done.
Okay, running as administrator solves that problem for me. Every time I run as administrator, the Trading Post works… and every time I don’t, it /doesn’t/. I don’t get the logic here, but at least I’m not stuck with a full inventory OR a loss anymore.
