Ok so long story short... Had a scene in progress finished the scene rendered and done , then needed the same set for the next shot moved the (recording) timeline just a little further up so i didnt get rid of the previous scene.
I moved one camera to a face shot and everytime i went to direct anything i would get that huge error message freeze and crash ... ultimately i remade the part of the set i needed for the shot and just redid the scene on a new set.
BUT WHY THE %^&* would it keep crashing i wasnt adding anything more merely moving stuff around,,, anyway .. would appreciate any help for the future.
P.S it was a medium build set but did have a lot of characters in it (if that makes a difference)