Winters Scribe

Greetings all. I use an unofficial viewer, and recieved items and merchant outbox folders are shown in my inventory as folders with errors, and are synced with the marketplace. Yesterday when I tried to upload some new goods I discovered that my Merc. Outbox folder is shown like a simple folder. When I tried to log with official SL viewer I got the message "marketplace returns errors" and I still can't send anythig to marketplace. Can anybody explain what happens, it is a global trouble or can it be solved by any way?