Axis will not display toolpaths if a file containg a subroutine contains an error.
To reproduce error place file in directory pointed to by PROGRAM_PREFIX in ini file
1)open example1.ngc in axis and you should see a rectangle
2)open example2.ngc and you will get an error message as line 1 in sub2.ngc is the wrong name
3)correct the error in sub2.ngc and open example2.ngc no tool path is shown
4)open example1.ngc and no tool path is shown (regardless if step 3 is done)
5)run example1.ngc and tool moves along the correct but invisable tool path
G code files
This is a bug in the gcode interpreter. Reassigned accordingly. It's probably another face of the behavior reported at http://mid.gmane.org/200907141504.55590.mb@bu3sch.de and replies
Run sim/tkemc.ini. Open example2 and run. You will get an error. Open example1 and run.
Expected behavior: example1 part program runs
Actual behavior: no motion