I have experienced very hard crashes using 1.5.0 under osx (the only thing you can do is power-off-hard).
The crash seems to be caused by cnodePath.show() (having a collisionSphere as child), while having a collisionray being cast througth this object at this moment. The bug was not allways reproducable, but since i have removed the .show i had no crashes.
the code setup i was using is:
- object creates collisionsphere from the model.getBounds() (center & radius), attached to model.cnodepath
- a collisionRay is traversing render colliding on mouseclicks
- if a collision with the object is detected, show the models.cnodepath.
- i also tried reparenting the object to a nodepath attached to the camera, not sure if this had a influence.