dad6d967_Wrye_Bash_General_Readme__Cause
[Issue] The NTVDM CPU has encountered an illegal instruction. [Solution] One workaround is to use the Standalone version of Wrye Bash. The alternative is to download PyWin32 separately and install it after installing Wrye Bash. [Cause] 
This is a Python issue that causes the installation of PyWin32 (part of the Wrye Python bundle) to fail.
Wrye Bash General Readme