CANNOT USING THE FUNCTION ON COREL X4

 Hello...

I have installed Corel Draw X4, and it works for some times..
Since i have many corel draw programms in my computer, so i had uninstall some corel draw 12 and corel draw 11, as i thought i already have the corel X4.
After that, i cannot use Corel draw X4 perfectly (cannot save, copy, cut, paste, import, save as, sent to, publis, etc... ).

I have tried to uninstall this Corel Draw X4 again, and re-installed..almost 3 times i did it...  but it is the result is the same, and those things happenned again (cannot save, copy, cut, paste, import, save as, sent to, publis, etc... ).

pls adv, what i should do ? thanks.