Examples unexpectedly quit in Panda3D 1.4.2 but not in 1.2.3

some kind of Panda3D DLL ? What is it exactly ?
I’ve never found any hard crash caused by panda’s dll. Mostly it’s by MS C runtime (msvcr*.dll), ie. due to segmentation fault. Recently I found and fixed 1 of them :
panda3d.etc.cmu.edu/phpbb2/viewtopic.php?p=18101
If you experience the same error message with those pieces of code, then it’s segfaulting, but I have no idea how it doesn’t happen here for those samples.
And this one is another broken different part on Linux :
discourse.panda3d.org/viewtopic.php?t=1559