All was good, now a Boat anchor (solved in comments)

[OnefinityCNC (Onefinity Support)]

Please note the FILE vs FOLDER button. I think you are mixing the two up.

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1.5 will have words on the screen for claification:

1.5 Beta 1 for BB Controllers (8/15/24) (Remember XYZ zeros upon reboot or estop)

8/15/24 1.5 Beta 1 This is the second release version of firmware 1.5 This is test firmware. As with all test/alpha/beta software, DO NOT INSTALL unless you like to be on the bleeding edge and can live with potential bugs. Beta 1 adds: NEW: Added text to the play, stop, load, ect buttons for clarification as many didn’t understand the difference between the upload FOLDER button (which only sees folders with gcode in them and will not show gcode) and upload FILE button (which only sees gcode,…

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Sounds like you have EMI if the machine gets a mind of it’s own.
See:

EMI | Screen Flickering, Blank, or Black Screen, Randomly Loosing Zeros, Freezing, Disconnecting or Random Happenings

EMI, Flickering, Black or Blank screen, Random Axis movements: If you have verified you have the cables connected correctly (screen MUST be connected to wall power) and the screen is blinking on and off during a cut, you may be experiencing EMI. Ensure you have the controller and screen on one outlet, and the vacuum and spindle/router on a separate circuit/outlet. Usually this is enough to stop EMI. However, some extreme cases we’ve seen is: the separate circuits wired but both in the same …