With Desktop and Server installed on the same machine and Data Interop licensed only for Desktop (not server) the following error message is displayed when Workbench tries to open: "FME Workbench is not licensed for this FME version".
Workarouds/suggestions for 9.2SP3 users:1. Revert back to 9.2 SP2.2. Install Server on a different machine than Desktop.3. License Data Interoperability on the Server