the ppmlic file is case sensative. check and make sure it is configured correctly
examples
bad: 002a01
good: 002A01
I also had one where someone had saved the PPMLIC file as 0000-005A.dat I renamed the file to ppmlic.dat and it didnt work. RTI regenerated the PPMLIC.dat file and it worked. there is a KEY number at the top of the PPMLIC.dat and it was different than the one that we had. my guess is that the key is generated with the file name as part of the formula