Assertion Error : too many colour changes

[bigbigblue]

Ink/Stitch Version: v3.0.1 (windows)

Traceback (most recent call last):
File "inkstitch.py", line 84, in
File "inkex\base.py", line 250, in run
File "lib\extensions\output.py", line 65, in effect
File "lib\output.py", line 109, in write_embroidery_file
File "pyembroidery\EmbPattern.py", line 1727, in static_write
File "pyembroidery\EmbPattern.py", line 1644, in write_embroidery
File "pyembroidery\PesWriter.py", line 50, in write
File "pyembroidery\PesWriter.py", line 110, in write_version_1
File "pyembroidery\PecWriter.py", line 40, in write_pec
File "pyembroidery\PecWriter.py", line 64, in write_pec_header
AssertionError: too many color changes, (3124) out of bounds (0, 255)

[Tyrosinase]

The error message will be improved in future releases, but the way to fix your file is found in #2574. I'm going to close this as a duplicate (though you can continue to reply here if you need clarification).