I was proceeding with a project and added Slate Digital FG-X vst2 in master bus. The effect was a compete crash of Sonar Platinum with no minidumps.
 
By elimination I have found out that Izotope Alloy 2 vst3 and Slate Digital FG-X vst2 are incompatiable. If I substituted Izotope Alloy 2 vst2 in my project and then add Slate Digital FG-X vst2, Sonar is stable.
 
Which plugin (Izotope or Slate Digital) is causing the problem?. I know Slate Digital has not updated the FG-X for a while, as I am having to use version 1.3.2 of FG-X, version 1.4.4 does not work with Sonar.
 
Anybody with Izotope Alloy 2 and Slate FG-X want to try this?.