Ok, now i can check the box and activate Luxrender. But what follows is that Luxrender crashes whenever opening the material panel. Thats what Console says:
malloc: *** error for object 0x7fff70251500: pointer being freed was not allocated
ndof: 3Dx driver not found
found bundled python: /Users/marue/Desktop/Blender_OSX_64bit_r43720/blender.app/Contents/MacOS/2.61/python
Job appears to have crashed: Abort trap
Saved crash report for blender[1485] version 2.61 (2.61, 2012-Jan-26, Blender Foundation) to /Users/and/so/on
