Something, maybe the windows sdk or visual studio installer, has defined the Platform environment variable and given it the value BNB.
What does BNB mean, and why is Platform set to BNB?
Thanks.
I've seen this, but it doesn't answer my question:
http://social.msdn.microsoft.com/Forums/en-US/msbuild/thread/1d229d75-aa89-42bf-809b-ef98f42072bb
See Question&Answers more detail:os