Also, maybe this is the same thing.
Don’t know the current status, you could ask mcdsp. If it’s still not possible to render normally without crashing in Wavelab, you could try loading the plugin in Patchwork (as the author suggests) or Metaplugin as a workaround to run the plugin in Wavelab. (it would probably stop the crashing even with the ML4000 VST versions, not just the AU version).