The quick select too is all of a sudden very slow and will not respond to addition or subtraction w/ the option held down in Mac. Holding down the left portion of the mouse and dragging the qick select tool is delated in responding. This has not been the case before. I did install Color Efex Pro 4 as an update and did install Nik update to that today. Could this be a problem. I haved aslo tried removing it and restarting and it had no effect. What is the problem?