[pygtk] crash don't know what it is and/or how to find a solution

[Nikos Kouremenos]

I get:

GtkWarning: gtk_text_attributes_ref: assertion `values != NULL' failed

Pango-CRITICAL **: pango_layout_new: assertion `context != NULL' failed
Segmentation fault

and the app crashes. Where am I supposed to look if I get such output?
[google didn't help]
-- 
Nikos Kouremenos | Jabber ID: nkour at jabber.org | http://members.hellug.gr/nkour