v2 initial error after using v1

FSX SE with V1 worked perfect...
Then installed v2 and have the following error. I tried unistalling both, rebooting, doing registry cleaning, nothing worked...

.... the application has failed to start because its side-by-side configuration is incorrect. Please
see the application event log or use the command-line sxstrace.exe tool for more detail. ....


Thanks

I also get this; using steam version of FSX.