Choose useful plug-ins to run this application. Click Plug-ins Tab. Then select Choose plug-ins and fragments to launch from the list checkbox. First, click Deselect All , then check Workspace plug-ins > com.ibm.btt.rcp.sample(1.0.0), then click Add required plug-ins, you can click validate plug-in set to validate your runtime plug-in configuration.
Then click Run to launch the Rich Client sample.