Any tools/hacks process are open in your computer?
Hacks may have corrupted game files or the HGWC.exe, you may want to try re-installing.
That's Bug
Use CCleaner
Hack/Injector may be detected.
Try using another injector and see how it goes.
if you get this error when you are not trying to hack simply delete your hacks and injectors from your computer but if not try a different injector and check and see if your hack is patched or not.