run the Command prompt with admin rights  and run this command:
SxsTrace Trace -logfile:SxsTrace.etl
Now run the program which causes the SideBySide error.
Go back to the command prompt press ENTER to generate the SxsTrace.etl. Now type this:
sxstrace Parse -logfile:SxSTrace.etl -outfile:SxSTrace.txt
Now open the SxSTrace.txt trace and look which VC++ runtime is missing.
If you are unsure, please upload the complete SxSTrace.txt to your SkyDrive  and post a link here.