CMD can be a bit difficult to work with sometimes when it comes to uncommon errors/bugs, you end up getting caught up trying to track down the root through these huge error stacks. From extensive experience we can almost bet the issue is related to other packages/programs that CMD uses (which is a fair amount). I'm not sure what kind of system you are running, or what exactly you mean by "computer crashed" - but here are a few things I recommend:
- Update all packages and CMD, try killing non-vital services temporarily, etc.
- Try compiling all different build types (testing, production, etc) and see if it always errors at the same spot.
- Go into the .sencha/app folder, and look for .properties files. These contain your default and environment build rules. Start slowly commenting/disabling entries to see if you can track down a specific step that is causing the error.
When you tried copying over your files, what exactly did you build fresh vs copy over? Just try generating (via CMD commands) an empty starter app and building - see if that works.