[Qgis-developer] QGIS python plugin, segmentation fault, what can I do?

[Dominik Fröhlich]

Hello,

I'm trying to write a python plugin to create an input file for an urban 
climate model (RayMan) out of three shape files.
Unfortunatelly QGIS closes when I try to load the plugin (Windows, as 
well as Linux, both 32bit, version 1.8.0). When I start QGIS from the 
Terminal (Ubuntu), I get "segmentation fault" when it happens. Thats all.
Is there some function that is known to crash QGIS or do you have any 
suggestions how I could  track down the error?

I put the plugin on our server if that helps. It can be downloaded from 
http://www.urbanclimate.net/shp_to_obs.zip.

Best regards!

Dominik Froehlich