ERROR HANDLING-Scripted Plugin

I extanded the dummy plug in so that it produces a point_grid (saved as point3tab; not graphically displayed)

Each of these grid_points can occur in diffrent propertie list.

So basically this works quiet fine.

When the point_grid gets to big I allways get the error : -- Runtime error: Attempt to access deleted TirMesh

for me it looks like that it has to do something with the automatic garbage collection.

How can I find out what causes this error?

thx for any help