add instructions to fix plugin file permissions

README.md

@@ -57,6 +57,8 @@ Copy the `plugins` folder, `RB4DX` folder, and `plugins.ini` file to `/data/Gold
 
 To update RB4DX, first delete the `ps4` folder in the `/data/GoldHEN/RB4DX/` folder on your ps4, then follow the steps above again.
 
+If the plugin is not loading, you may need to change the file permissions of the plugin to allow it to run. This can be done with the PS4/GoldHen Cheats Manager, in the settings there is a button labelled `Set file permissions for Plugins`, pressing this should make the plugin load correctly.
+
 ### Optional Additions
 
 *Rock Band 4 Deluxe* Comes with many goodies to change/improve the game