A new configuratiion of PrusaSlicer makes a problem with "FW crash detect!" error
 
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A new configuratiion of PrusaSlicer makes a problem with "FW crash detect!" error  

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Slaw
 Slaw
(@slaw)
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A new configuratiion of PrusaSlicer makes a problem with "FW crash detect!" error

Hi All,

I started to receive the "FW crash detected!..." error on all my three MK3S+ printers (firmware 3.14.1).
It looks like, it started to happen after the last configuration update for PrusaSlicer 2.9.4
When I start print a new .gcode file, printer beeps, restart, and after the restart the "FW crash detected!..." error appears on the printer screen.
The issue appears even for very small and simply file, like a small cube.
Old .gcode files (even big ones) generated a few months ago can be printed without issue.

I tested it on my 3 (!) MK3S+ printers with the same firmware - all the same result.
If I press the select button, the printer shows the main menu, and if I select an old .gcode file, the printer starts to print...

It looks like, all newly generated .gcode files from PrusaSlicer cause the error...
Anyone else, have similar issue ?

Posted : 08/05/2026 2:09 pm
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