If the above solutions don't work, you can try more advanced troubleshooting steps:
Click the "Update" button if it appears next to Addictive Drums 2.
Keep only the most recent version in your primary VST folder. Final Thoughts
: He manually pointed the installer to his VST2 folder, ensuring the Addictive Drums 2.dll was exactly where the DAW expected to find it. Back to the Beat