In every project, yes. But not every time it is added to a track. Usually, what I get is a loud "pop", then the meters are pegged. Occasionally, bypassing the plugin temporarily can fix the issue. Rarely, I have to restart Sonar to sort it out.
I've taken to saving everything right before adding CT to a track, which is probably a good idea with any plugin in any case. If it weren't so dang useful.
Plugin Alliance has a couple of plugins, one of which is Stereo Savage which does
some of what CT does. PSP also has their Stereo Pack which handles more. But CT is a nice all-in-one package, and free...
Regards,
Dan