See the attached crash dump file from Cubase.
This dump is happening when closing Cubase with Kontakt 7 on the last track (I don't know if that makes a difference).
But I also had a project with a track with Kontakt 7 in it where Cubase would hang while loading the project when it got to the point of loading that track. The only way I could get the project to open was to rename the Kontakt vst3 in my plugins folder file so that it could not be loaded, but I haven't tried to replicate that.