[Closed] Script problems with IES_Sun and mr_Sun

I’m writing an exporter for SunFlow ( http://sunflow.sourceforge.net ) and have hit on a problem with IES_Sun and mr_Sun. When I’m parsing the scene lights in the listener, everything works fine, but as soon as I do the same in my exporter, they don’t show up.

For example:

for lig in lights do
 (
 if (classof lig == IES_Sun) or (classof lig == mr_Sun) do
  (
  print lig.name
  )
 )

This works in Max itself, but doesn’t do anything at all when put into the script. All other lights get exported as expected.

Anyone got any ideas?

Dave