By the way, is the first time i see when i mouse over a icon the word:
None.

No description on this label.
Wondering if tha t can be part of the bug, cause i select some geometry
and a fatal segmentation crash happens!

btw i am using version 12.5.316.22

another thing i noticed:

if i try to create a sky light with some geometry clouds in the viewport.
Houdini crashes as well!

Damn i love clouds so much

that's unrequited love

In H12.1 I had the same problem using the sky light and was related to my quadro card.. so which OS and graphics card/drivers are you using?

Do you have a geforce card by any chance?
http://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopic&t=28194 [sidefx.com]

Yes GEforce GTS 250.

But i changed the viewport to GL 2.1 and stoped to crash!

seens was that the problem

wondering what i miss if i change the viewport to that, is it just
a viewpport quality i miss?

I am working on Ubuntu Studio 12.04 with GTX 260, I am also facing some issue with cloudFX. The moment I open a new scene and create any object, for example grid or sphere and click either cloud rig or cloud, Houdini start eating my memory, it doesn't stop after 12 GB physical memory and jump on swap memory. After it consume 24 GB of memory, it crash.

I changed viewport to other than GL3.2 but no help. Am I only one to face this problem or anybody else got the same issue?