How do I remove GUI.exe

Within the past few days I developed a problem trying to run
Easytune 6. Upon checking for an update and waiting for the file to
download nothing happened so I had to cancel the process. Now I can't
reinstall or remove this PITA pretty much useless app and get a report
every time I boot that says "could not load test file Language.xml".
I am assuming this error is generated from this situation. I then get
a popup that reports "Debug Assertion Failed" relating to GUI.exe
file: wincore.cpp. The advice is to gain information about debugging
Visual C++ documentation on asserts. Short of learning Visual C++ I
have decided that removing this application completely should solve
this problem. Running the uninstall app gets me nowhere as does any of
the attempts from Control Panel.
Can anyone please tell me what has to be done to restore my system?
System Restore doesn't help so before I remove and replace this OS
disk with a clone I am hoping someone here can show me this is not all
that difficult situation.

Thanks.

Al.