I got this error when trying to copy text from the command line in AutoCAD Architecture 2013. Same problem using paste to command line. I could reproduce it several times but not on another computer. A restart of the computer did help for some reason.
AutoCAD Error Aborting: FATAL ERROR: Unhandled e0434352h Exception at 75c7d36fh
Unfortunately the problem with acad.exe The application was unable to start correctly (0xc0000043) is not solved and reinstalling have not helped.