I am getting an consistent crash when inserting rematrix solo. Does not matter if it is on a buss, track or master. Happens every time. I am open for suggestions on how to resolve the issue.
 
i7  Dell XPS 8GB Memory
Windows 8.1
Sonar Platinum
Focusrite Scarlett 18i
 
Regards,
 
Rick Shapiro

The only time that's happened to me was when I tried modifying the preset database. You might have one that is corrupted somehow.

Is there a way to uninstall and reinstall. 

I think only if you reinstall the main platinum package.

Under Preferences/VST settings.
 
Click RESET.
Then click rescan.
 
See if that works...
 
Also see if the issue happens with brand new projects.
 
Cheers...