If you make fonts with the java editor and get "index out of range" errors with these tools...

[tigert]

Turns out the python scripts are kind of strict about endlines, and I was getting this:

$ python copy2mcm.py -i pixelaatio.mcm \
-o ../betaflight-configurator-tigert/resources/osd/clarity.mcm -f 0xA0  -t 0xA0 -c 64
Read 256 chars from pixelaatio.mcm
Read 0 chars from ../betaflight-configurator-tigert/resources/osd/clarity.mcm
Traceback (most recent call last):
  File "copy2mcm.py", line 76, in <module>
  odata[copy_to + i] = idata[copy_from + i]
IndexError: list assignment index out of range

My font was created with the MAX7456Charwizard java editor. Turns out it creates Windows-like line-endings on the font file. I got past the above error by using "dos2unix" command to convert my font file to "unix" line endings.

Maybe this helps someone, so wanted to write this down.