Blender is part of the curriculum at my university for my Virtual Environments module, and im trying to install it on my home Mac which is a new G5 17", so i should have no problems with specs etc. However, when i have downloaded it and extracted it, blender is in a folder which is highlighted RED (I have never seen this before in OS X, what does it mean?) and when i attempt to run it the icon shoots out into the screen as normal but then the system just sits idle.