There is a reproducible error with ArcGIS_Data_Interop_Ext_for Desktop_104_149425.
With a running ArcMap before the installation of the Interoperability tool I cannot start ArcMap any longer when the package, mentioned above, is installed. As soon as the extension is uninstalled, ArcMap starts again.
That is on Windows 7 Enterprise SP1
Cheers Thomas
Has this been solved, I am having the same issue.
Do you have the Mapping and Charting extension also installed?
thanks
Laurene Koman
ArcGIS Install Team