That's the name of a file that has gone AWOL by the sounds of things, not an error code. Windows error codes take the form of letters and numbers looking like this: 0x80004005.
Does the system boot up normally, or does this occur on start up? Is it just when running this "repair shop" program (if so, what is the program called?)?
Run up a Command prompt as Administrator and enter the following command:
It will scan the system and replace any files it finds that are corrupt or out-of-date. You may need your Windows 8.1 install disk to hand if it finds anything.
Failing that, or in addition, try this command (also from a Command prompt as Administrator):
dism /Online /Cleanup-image /RestoreHealth
This will check the health of your system online (so you'll need to be on the Internet) and fix anything it finds.
Let us know how it goes!