If your clip(s) with an active VocALign or Revoice Pro Link Extension do not play back in Cubase 10.0.30 or Nuendo 10.1, please update your software: Steinberg rectified his issue in Cubase 10.0.40 and Nuendo 10.2.
If you are unable to update at the moment, please check your Studio Setup:
In Cubase or Nuendo, go to Studio > Studio Setup... > VST Audio System
In Advanced Options, if Processing Precision is set to 64 bit float please set it to 32 bit float instead.
This will restore clip playback in Cubase and Nuendo as expected until you can update.
