Erlang Run Time Errors

[oort]

Starting a thread with questions about how to read Run Time errors.

I am back to playing with converting the Stereoscopic patch to a plugin.

Still working with Wings 1.4.1, since that was where I had already started.

How do we read the information in the error that is generated?

I get an undef error, which is described as follows: "The function cannot be found when evaluating a function call."

How do we know which function is the problem and what does the rest of the information in the report mean? See report below.

Thanks,
oort

Quote:wpc_stereoscopic:command/3: bad return value: {'EXIT',
{undef,
[{wings,geom_title,[{geom,2}]},
{wpc_stereoscopic,
new_viewer,6},
{wpc_stereoscopic,
new_viewer_stereo,1},
{wpc_stereoscopic,command,2},
{wings_develop,time_command,
2},
{wings_plugin,command,3},
{wings,raw_command_1,3},
{wings,raw_command,4}]}}