I changed HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion changed Current version from 5.0 to 4.0 and it works.
Note install exceed into a directory with no spaces.
Install fine.
I have exceed 6.1 installed. I run setup and it get an error. Unable to istall.
Check NT Version
The installed version V5.0 of Microsoft Windows NT software is not supported with this version of Unigraphics.
Please install WINDOWS NT V.40 certified by Unigraphics on this system.