Is the track 16 bit? I think some of the effects in the edit pulldown only work for 16 bit.

Upgrading to current version is recommended for such a newer machine. Realtime effects will work for 24 bit, etc.

Not sure if PT9 had the realtime FX, if so try
edit-audio effects-realtime DX FX path to get to the compressor (just might work)

Otherwise re-run the PGEffects installer which is an executable in the PT folder if you want to try to re-install the effects.
This may cause you to lose some presets if previously saved (I'm not sure)


I do not work here, but the benefits are still awesome
Make your sound your own!