Noise Reduction deletes my whole track

All of a sudden when I go to effect Noise Reduction on a track it up and deletes the entire track! I recently reverted to an earlier version because of a different problem. I guess it’s time to learn Reaper…

Selecting “Residue” on noise reduction can almost delete …

Audacity preferences can persist from the more recent version and be incompatible with the old version you’ve reverted to. May need to purge settings to get a fresh start … Resetting Audacity | Audacity Support