I tried both the above mentioned methods. It did not work. fortunately I had a back up of applications a DVD. I deleted preview from my hard disk and copied from back up DVD. It works fine.
i recently upgraded from X.4.1 to X.4.2 from the net. After that I can not open Preview. Error message says preview quit unexpectedly. try again option does not work. error report was sent to Mac. How do I fix this?