macOS and VST2, VST3, and AU formats:

  1. Close Studio One.
  2. Using macOS Finder go to “~/Library/Application Support/PreSonus Software/Studio One 4/x64/” (without the quotes).
  3. Manually delete the PluginBlacklist.settings file (to delete the blacklist).
  4. Manually delete the PlugInScanner.log file (to force a complete new plug-ins scan).
  5. Re-open Studio One.


Windows and VST2, and VST3 formats:

  1. Close Studio One.
  2. Press Windows key plus R.
  3. Enter “C:\Users\%username%\AppData\Roaming\PreSonus\Studio One 4\x64\” (without the quotes), and click on OK. 
  4. Manually delete the PluginBlacklist.settings file (to delete the blacklist).
  5. Manually delete the PlugInScanner.log file (to force a complete new plug-ins scan).
  6. Re-open Studio One.


After deleting the plug-ins cache files, on the next run, Studio One will re-scan all of your VST2/VST3/AU plug-ins and depending on the number of VST2/VST3/AU plug-ins installed, the process may take several minutes.

Do not send us emails or reply to help-desk solution, since the ticket will be created without any property and our help-desk agents will not answer them.


To contact Acustica Audio support go to the ‘Support and Help-desk Section’ in your Acustica Audio account. We do not provide support via social networks, public forums, Acustica Audio forums, or email accounts.