Not printing, pi cam not working

[jtvm20]

I have installed PiBooth as documented. A standard install with all standard functionalities (no plugins etc.)
The application is working okay. Accept 2 issues:

1. When photo is send to printqueue it doesn't send it to the printer. It keeps 'hanging'in the printqueue. However when printing it from another application it is printing directly.
2. The Pi cam is not recognised by PiBooth, no error code. When checking with another application it is working fine. An USB WebCam is connected as work around.
   I am a beginner with Python and Rasp Pi.
   What could be wrong?