I'm running Houdini 12.1.98 (but this behavior occurred in earlier versions as well). I have a digital asset that I created in Houdini 10.x
When I create a scene with this asset it seems to crash after a short while, diving into the network, make a change, then go back up, seems to reproduce the same error as below:

Crash report from Jim; Houdini FX Version 12.1.98
Traceback from Sun Oct 14 15:05:12 2012
Caught signal 11
+0x665aeeae
+0x665433fc
+0x6655434f
+0xfb15517e
+0xfb155604
+0x7105b6e0
+0x7104dd90
+0x7104e249
+0x6f4e69ca
+0x6f44140f
+0x6f44140f
+0x6f4ec7c3
+0x6f4f3a2e
+0x6f44140f
+0x6f44140f
+0x6f4bea88
+0x6f4beb59
+0x6f49e5dc
+0x6f49e6fe
+0x6f49e79e
+0x6f482090
+0x707fe1bf
+0x707fe75d
+0x4000229b
+0x7704652d
+0x772cc521


Here's the system specs from Houdini's Help dialog:
Houdini FX Version 12.1.98
Platform: windows-x86_64-cl15
Number of Cores: 8
Physical Memory: 11.99 GB

OpenGL Vendor: NVIDIA Corporation
OpenGL Renderer: Quadro 4000/PCIe/SSE2
OpenGL Version: 4.2.0
OpenGL Shading Language: 4.20 NVIDIA via Cg compiler
Detected: NVidia Professional
2048 MB
296.70.0.0

Any idea about what I can do? Do I need to rebuild the asset? The asset is a complete model, with shaders and lighting rig (about 6 lights in total).

Last night I tried upgrading the Nividia drivers to something more recent. 306.79 to be specific. So far, it hasn't crashed with the asset. I just wish I knew what the problem was.