Mach 4 Crash: Known Issues

On Startup

Data Files

Mach 4 relies on a number of data files, early in the startup/initialization process. If any of them are corrupt, this can cause immediate crashing.

Corrupt Mach4GUI.ini

This INI contains settings saved from the last run, like window size/position and a few behavioral settings that are "global" behavior rather than profile-specific behavior.


  • happens before screen load




  1. Edit %APPDATA%\Mach4GUI.INI (e.g. with Notepad++)
  2. Remove any binary data at the end of the file.
  3. Save and exit.

Revision #2
Created Tue, Feb 4, 2020 7:50 PM by Todd
Updated Tue, Feb 4, 2020 8:13 PM by Todd