For me this turned out to be a Cinema Camera. I basically moved all the contents into separate sub-levels and saved them off until I found the objects that were causing the lock-up on save. I deleted the cameras and everything is saving fine now.
For me this turned out to be a Cinema Camera. I basically moved all the contents into separate sub-levels and saved them off until I found the objects that were causing the lock-up on save. I deleted the cameras and everything is saving fine now.