The GOG version of Dragon Age, by default, does not come with registry keys required by DAO Toolset to run. This is to prevent issues with the EA Origin Client, which scans for that particular key and might trigger an auto-update, which can possibly break the GOG version of the game.

To install Toolset, you need to restore the proper Registry path. For your convenience, we're including a batch script that will do this automatically; simply run 'regkey-switch.cmd' with admin rights. If you want to remove the key - run the script again.