Program window closed while changing the feed rate and acceleration settings with this error message:
The program 'horus.py' received an X Window System error.
This probably reflects a bug in the program.
The error was 'RenderBadPicture (invalid Picture parameter)'.
(Details: serial 1007655 error_code 143 request_code 139 minor_code 30) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the --sync command line option to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.)
I haven't been able to reproduce the issue running $ horus -sync