"buffer view pdf2"

[Emanuel Blum]

Hi there,
I'm a absolutely happy with using Lyx since a couple of month, but  
there is the following small problem: I can't convert pdf anymore.  
When I press the button, I receive no error message, just nothing  
happens. The only indication is "buffer view pdf2" in the bottom line.

-Lyx Version: 1.6.5
-Operating system: Mac OS X 10.5.8

Thanks for helping me :)

Emanuel