Have you tried cutting the Testpilot embedded texture out of the .dat and saving it into the tex folder?
I've suffered seven BSOD while trying to start my desktop tonight (got onto t'Internet with my trusty netbook) so there's little hope of me being able to help chase down a solution. Fortunately I backed up all of my WB files last night including a potential fix to the He111B crew skins.
New desktop ordered and due here on Tuesday (the old one has been breaking for at least six months and The Boss agreed to a replacement). Guess I'll be taking a siesta...