[OpenSCAD] F5 rendering is often incomplete however F6 is correct but missing stuff in F5 makes # and % operations impossible in lion

[Marius Kintel]

Hi,

What you're describing are two separate issues, which are both related to OpenGL driver issues which triggers under Mac OS X Lion on Intel graphics cards:
https://github.com/openscad/openscad/issues/65
https://github.com/openscad/openscad/issues/71
 
One of the problems can be improved by checking the "Force Goldberg" checkbox in Preferences->Advanced.

 -Marius