SOFTWARE FIELD BULLETIN
NX 4 and NX 3 Will Not Start After Internet Explorer V7.0 Is Installed
Solution/Workaround
Delete the %UGII_BASE_DIR%/ugii/psapi.dll file.
Note: UGS provided the psapi.dll file for Windows NT compatibility. However, it is no longer needed since it is included in the Windows 2000 and Windows XP operating systems.