failed to start because side-by-side configuration is incorrect

Go to Origin, right click on the image of your game and click repair. Fixed this issue for me

I do not have the repair option on my screen? also tried the disc but no such option appears.. ideas?

This worked like a charm, thank you.  

If like me you've tried everything to resolve this error - and nothing works, you might try checking (if you have one for your app) the .config file.

What we found was a comment block the was NOT CLOSED - thus making the rest of the .config file from that point onward one big comment!