I have been using Halion 4.5 in a few recent projects. I have noticed that when I use Halion 4 Cubase is very likely to crash on exit with a hashstack or ntdll error, or , even worse, when I try to open the project again , Cubase 6 crashes and the error log clearly blames Halion 4. This started to happen with H4.5/ Cubase 6.05 , so I am not sure if this is Cubase’s or Halion’s problem. But it definitely needs investigating. It is not good to see a Steinberg VSTi crashing Cubase.
For the error see attached screenshot.
I use both Halion 4 and Cubase 6.05 in 64bit mode.