: Ensure the file extension is strictly .rk and hasn't been renamed to .txt by your email client.
(Exact contents depend on Cockos’s implementation; vendors often change formats over time.) reaper-license.rk
reaper-license.rk file is the essential, portable registration file for the REAPER digital audio workstation that removes the evaluation splash screen. Users can activate the software by dragging this file into the application or importing it via the purchase email, with licenses available in discounted and commercial tiers. For more details on licensing, visit Purchase - REAPER : Ensure the file extension is strictly
: When you purchase a license, you receive a block of text via email. When you "Import license key from file" within REAPER, the software generates this .rk file to store your encrypted registration data locally. For more details on licensing, visit Purchase -
If you see "UNREGISTERED" or "Evaluation" (with a countdown), the installation failed.
