No sound after adding reverb


I am running 2.0.5 on windows 8.1. When I add reverb it will not play in audacity and it kill all sounds from the computer. Any ideas?

Is it the reverb effect in Audacity, or reverb from somewhere else?

Audacity reverb effect.

Do you have a USB microphone or other USB sound device?

Please give detailed steps to reproduce the problem.