Update: The latest Biab build (1123) is still crashing immeditately when trying to load Halion7 or Halion Sonic. Interestingly Padshop is working now, which was not the case when I tried it before installing the update.
I've also tried all other Steinberg VSTis that I have: The Grand => crash, Groove Agent => crash. Backbone gave an access violation at first, but on the 3rd or 4th try it loads fine and works.
@Rustyspoon: no e-licenser any more, everthing is on Steinberg Licensing.