Repeat the procedure described in
Creating an ActiveMatrix BPM Developer Server. If the
Create TIBCO ActiveMatrix BPM Server wizard detects that there is already a Developer Server instance on this computer, the
ActiveMatrix BPM: Clean Existing Developer Server page is displayed. You can then confirm that you are happy to delete the instance completely, so that a fresh instance can be created.
Note: On Windows, sometimes the TIBCO ActiveMatrix service is left with a "Disabled" status instead of being removed by the uninstaller. Before reinstalling ActiveMatrix BPM, you must restart the computer to remove the service. If you do not restart, the service cannot be re-created during re-creation of the Developer Server.