Not sure, but probably you have to do a "nmake distclean" in between or it finds your license information. However, this is the opensource forum. You would need to approach the commercial, they have to able to give the proper answer.
Ok, so I was able to resolve my issue after a lot of messing about. The short of it was that my Makefile.release file wasn't including the cstdint header file. I'm not sure where in the configuration it went wrong (configure.exe) but I had to add to the Makefile.release file the following information:
INCPATH= -I"c:<msvc path>\VC\include"
INCPATH is already there. You need to add the rest BEFORE the rest of the path information being included. It didn't work when placed afterwards.
This worked until I came across another problem with the StringsExtras.h file, which was another issue (had to comment out the 'endif' statements on lines 79 and 91).