I'm having some fits with the constrained orbit center. It seems to me that It used to always be in the center of the screen when I would use Shift and CMB. Now it seems to be stuck on the center of my assembly/part. I know that I can hit F4 and long select LMB to re-center but I have never had to do that before the last day or two. I have uninstalled all the Beta Add ins I had installed and I have even uninstalled and reinstalled Inventor Pro 2014.
Is there an option somewhere that puts the default Orbit Center to the center of the screen?
No setting like that I that I know of.
While holding down the F4 button, where ever you left click, it will center the part there and that will be the new orbit center. That is the method I use all the time.