Try the following:
1. Check the VST plugin file path in Kore. Go to File > Options and you will see the path.
2. Run the latest update for every Komplete plug-in that is not working in Kore, and when the installer asks you where to place the VST plugin, you should choose the folder that you have specified in the Kore options.
3. Try each Komplete program in standalone mode at least once to make sure it is working.
4. Run Kore and see if everything is showing up properly. You may need to go to File > Options and rescan the plugins again after going through steps 1-3.