I’ve seen this error with AutoCAD Architecture 2013. So far the only solution has been to try starting ACA 2013 a second time when it usually works fine.
acad.exe - Application Error: The application was unable to start correctly (0xc0000043). Click OK to close the application.
I tried to run the three executable below this folder \3rdParty\x86\VCRedist\ on the installation media and since then I’ve not seen this error. But unfortunately this did not help as I later on got the error again.