Something wrong with recommendations but you don't know what? Try the following steps:
- Stop and disable (= set mining mode to "off") mining.
- Clear indices.
- Remove all patterns.
- Remove all mapping definitions.
- Remove all rdf files from directory models in your CoRe persistence.
- Shut down your servlet container.
- Start your servlet container and wait until all components have been updated (i.e. rdf files are recreated).
- Start mining and wait until the initial mining procedure is finished.
- Hope everything works now.