hen uninstalling Kore, there are two files that might be left behind on the hard drive. They are called "nikoredatabase" and "pluglist.xml" and you will find them here:

C:\Documents and Settings\USER\Local Settings\Application Data\Native Instruments\Kore\

Please delete these files manually after uninstalling Kore and then run the installation again. Kore will then scan all plug-ins at its start.