Linker error LNK2038: mismatch detected in Release mode

Question

I am trying to port a small app of mine from Win XP and VS 2005 to Win 7 and VS 2010.

The app compiles and runs smoothly in Debug mode, however in Release mode I get the

Answer 1

My problem was that dependent project used "Use Multi-Byte Character Set"
under Generl-->Character set. while other project had "No Set" value