Glad to hear you've managed to get it all working again! TFS is slightly strange sometimes, and PowerBuilder can have problems with PBG files no matter what source control system you are using. I've never been sure why but possibly when two people try to check-in or add an object from the same PBL at the same time.
Also, I have to ask, is that really your name, and if it is does it have the same meaning as it does here in the UK?