Just wanted to make it known that Nebula works ok in the new version on Pro Tools. I'm on Mac, using the fxpansion adapter.
The only issue is that PT's delay compensation only goes up to 4095 samples. If I reduce the Reverb Nebula's dsp buffer to be low enough to work with the adc, then my computer isn't powerful enough to run the reverberation programs. But my computer is pretty weak (C2D 2.16G).