Here are some reasons for having problems with 16bit applications:
1. The PATH variable is too long or has an entry pointing to the WINDOWS or WINDOW/SYSTEM directories of a Windows 3.x or Windows 95 installation. This would be in either Control Panel / System / Environment or the AUTOEXEC.BAT. See tip 021.
2. The COMMAND.COM used by Windows NT is missing, damaged or replaced by another version. Repair System files and re-apply your latest Service Pack.
3. The VER.DLL file in the %systemroot%\system or %systemroot%\system32 directories is corrupted or replaced by an invalid version.
4. SHARE.EXE (or VSHARE) is being loaded in an %systemroot%\system32\AUTOEXEC.NT.
5. Insufficent environment space, see tip 047.
6. Check %systemroot%\system32\CONFIG.NT, here is mine:
shell=%systemroot%\system32\command.com /p /e:4096
7. Corruption of the WOW sub-system files. Repair System files and re-apply your latest Service Pack.8. Make sure the following files are from your latest SP or NT CD, whichever is later:
See tip 1227.
See tip 1238. to index