Panda PhysX

Looks like I need to redownload. (should I get the sdk?)

--pre--
:physx(spam): init module
:physx(spam): @enter: _sdk=00000000

Also, (this may or may not be useful information) the physx demos, including the water physics demo, work fine.

EDIT: I reinstalled the system software, and it still hangs after:
:physx(spam): @enter: _sdk=00000000
Maybe I need to wait longer for the import to complete?
Or do I need the SDK.