BP Client Error - Need help

I am getting a "Unexpected Error: stack trace in debug log" when I attempt to login to my client to process my turn, anyone know what causes this and how to fix it?

problem solved thanks to Vic, had to rename player.dat to something else and let BP recreate it.

Cripes, I'm getting that same pesky error. I tried to rename the thing and got nada.  Not sure if I was looking in the right place though.  Haven't had a chance to read my turns as working all week. HALP!

Klag, in your blood pit folder, navigate to /A001/M0641/

In that folder you will find your player.dat file.  Make sure you have the client closed.  Then rename that file player.tad.  Run the Blood Pit client, enter your mgr# and password, and the client will then download a new player.dat file for you, which will not be corrupted, and magically everything will work again.

Thanks Vic! That did it.  Knew that pesky file was somewhere!  Got my fools up and running and now to read and digest the fights.