Downloaded the trial - Installed fine, loads fine, everything seems to work fine except the effects menu.
As soon as I try to open the effects menu it crashes... this happens in both Win7 x64 AND Win8 x64 (tried for fun) Corel X5 works fine in both, BUT its the 32 bit version... wonder if i should try that
Have you tried removing (or renaming) the "plugins" folder in you installation folder? Plugins on this folder autoload the first time you open up the Effects menu, perhaps there is a plugin crashing there.