License Not Recognized Error 18 Verified — Sap2000

The license file was not properly generated or copied during the installation process.

The error message, "License Not Recognized Error 18," usually means that Sentinel RMS (the licensing system used by Computers and Structures, Inc. or CSI) is running, but it cannot find a valid license for the specific version of SAP2000 you are trying to open. Common causes include: Sap2000 License Not Recognized Error 18