Sorry, the original message was from before my time. 🙂
The key is this part:
Y
Command: C:\PROGRA~2\ORIGIN~1\MASSEF~1\__INST~1\vc\vc2005sp1\redist\vcredist_x86.exe /q:a /c:"VCREDI~3.EXE /q:a /c:""msiexec /i vcredist.msi /qn"" "
You need to find the file "vcredist_x86.exe" and try to install it yourself. Assuming it's still in the above path (which shows up truncated, but is likely c:\program files (x86)\origin\Mass Effect\__Installer\vc\vc2005sp1\redist ) you can probably run it directly from there. Once you do that, you should try restarting the installation.
It could be that this file is corrupted, in which case you could download it directly from Microsoft, probably from here:
http://www.microsoft.com/en-us/download/details.aspx?id=5555
Ok, time to put my boy to bed! Good luck! Do let me know how it goes.
