ProWORX NxT is not qualified to run on Windows 7.
The ProWORX NxT authorization will not run properly on the Windows 7 O.S. NxT is a 16-bit program. Windows 7 is either a 32 or 64-bit application.
ProWORX NxT will not be qualified to run on Windows 7. You will need to upgrade to ProWORX 32 v2.1 SP2, which is qualified to run on the Windows 7 Pro 32 or 64-bit platforms.
NOTE: Proworx software is now obsolete. Check with firstname.lastname@example.org for availability.