Hi there!
I’ve got a problem with navigating in 3d view in blender 2.76. I’m working on a mac-computer (10.11.3) with magic mouse 1. It seems like blender uses 2d input in 3d view. When I installed blender everything was ok, but suddenly it changed without any adjustment.
Scrolling moves the camera instead of rotating.
Alt+Scrolling moves the cursor in the timeline.
Ctrl+Scrolling moves the camera left/right instead of zooming.
Shift+Scrolling moves the camera up/down instead of moving.
The “Emulate 3 Button Mouse” checkbox under user preferences > input is grayed out.
If there is already a thread for this problem please excuse me.
Thanks for your help.