NotAFan:

See if you can:
  • Boot into Safe Mode (Note #1).
  • Using Task Manager (CTRL-ALT-DEL), execute RegEdit (Note #2).
  • Then Import the xp_exe_fix.reg without errors.

Note #1:

Note #2: File menu, then hold down the CTRL key and click "New Task (Run)" and at the Command Prompt window. Enter REGEDIT.EXE and press Enter.