Why won't my effects preferences be saved?

i’m trying to use autotune and i have to be able to check the rescan for vst box but when i restart audacity it resets and forgets my input

The VST scan makes Audacity launch more slowly.

When Audacity scans once for VST effects it does not need to do so again unless you want to add new plug-ins before each new session of Audacity. Is that what you want to do?

AutoTune’s features do not work completely in Audacity because Audacity does not support MIDI control. You can also try Autotalent http://www.vst4free.com/free_vst.php?plugin=Autotalent&id=842 .