I added a wrong custom VST folder so now Reason stalls during launch

If you accidentally added an entire drive - or a folder which contains a huge amount of files - as a custom VST folder, Reason 9.5/10 might stop responding during launch. If this should happen, just delete the "Reason Plugin Folder.prf" file in the following location: Windows: %APPDATA%\Propellerhead Software\Reason or Mac OS: ~/Library/Preferences The user (~) Library folder is hidden by default. To find it, select "Go To Folder…" from the "Go" menu in Finder, and paste ~/Library/Preferences and click "Go" Then, launch Reason 9.5/10. Now, only the default VST Plugin Folders should be scanned.