having an issue with the RW cursor editor

specificaly in the import /export layer department

What happens is i open up a new document .or even an existing one ,,then maybe do a few cuts and so on .As soon as i try to export that layer ,,my whole editor just freezes up,and will not allow me to do anything ,no functionality whatsoever ,i uninstalled and re installed ,but no good ,it still does it
weird thing is all was great yesterday ,suddenly ,it just started ,no changes were made to my system either so its kind of bugging me
if anyone can help out or knows of this issue ,i'd love to get it sorted out
Acrux