The Issue

In Pro Tools 8.0.3 and 8.0.4, when using Pitch 'n Time Pro to process audio the resulting output is silence or "pops and clicks". This is due to an issue caused when using another AudioSuite plug-in to process the audio in the same session before using Pitch 'n Time Pro.

Workaround

Ensure Pitch 'n Time Pro is the first AudioSuite plug-in used in your session, or restart Pro Tools when you are wanting to use Pitch 'n Time Pro.

UPDATE

This issue has been fixed in Pitch 'n Time 2.5.1, which is now available on the download page.