• If the download contains a Data folder and RoRInstaller.exe, run RoRInstaller.exe to complete installation.
• If the launcher becomes stuck or its button stays grey, restart the launcher and try again.
• Check the downloaded files in Windows Properties: they should not be blocked or marked read-only.
• The installation guide recommends a folder such as C:/ReturnofReckoning.

Read the detailed Windows Troubleshooting Guide.

• Xpander’s detailed Linux guide
• Detailed Mac installation guide

Contact the team with the error message and the steps you have tried.