MK1 - not able to switch between projects

Seems like I cannot load/switch between projects anymore. When Save before loading (Y), nothing happens. Tried restart. Not sure what caused this error, two thing might be considered:

  1. Started to use Ovebridge few days ago
  2. Just now dumped new soundpack on AR

any thoughts?
thanks

How many projects do you have on your machine perhaps its out of room. Though i know they can hold alot of projects

not many projects, no more than 6-8

Solved. Making new project somehow unstuck AR. I believe that dumping new soundbank caused this error