Netware 6.5 sp8 iprin tclient 5.92 Windows xp & Windows 7

No problem loading Xerox Nuvera MX drivers via the broker.
After the Xerox Nuvera driver is downloaded to the workstation and right-click on printer, printer preferences

Windows XP MS C++ library c:\windows\explorer.exe error runtime error R6025
- pure virtual function call

Windows 7 explorer.exe stops restarts

Xerox Nuvera 120 MX Production System Version: PCL, PS, PCL6
Printing is not acceptable.

HP Univeral driver & Xerox Docuprint 135 drivers work.

Microsoft TCP/IP with Nuvera drivers work.

Any ideas?