Hi Peter,
> If I start a new Eclipse with my RCP Eclipse and some other plugins, then > the UIMA plugins are indeed listed as installed in the About/Installation > Details, but can not be loaded or used by other plugins. I am not sure what plugins are "included" in your "RCP Eclipse" and how you "launch" your RCP. Let me describe some options that you can try. Option 1. "Validate Plug-ins" before you launch your RCP If you launch your RCP through the Lauch Configuration Dialog, in the "Plug-ins" Tab, there is a "Validate Plug-ins" button that you can click to verify that all the dependency of the "selected" plug-ins are satisfied. If there are some errors, you can click the "Add Rquired Plug-ins" to correct the error. Option 2. If your RCP has "Plug-in Dependencies" view, try to see if there is a "red x" on top of any UIMA plug-in that may have some missing plug-ins that it depends on. Option 3.If your RCP has "Plug-in Registry" view, try to "diagnose" the problematic UIMA plug-ins as follows: - "Plug-in Registry" view, Right click of any plug-in and Select "Show Advanced Operations" - Right click on the problematic UIMA plug-in and Select "Diagnose" which will pop-up the result of the diagnostic operation. Let us know which option you can use and what is the result. -- Tong
