Sorry for that. Yes I work on Windows Pc.
All configurations in lr goes into one big files, the prefernces. If lr starts it reads its configuration from the prefences file. Plugins also read there configurations from the prefences file.
If there is a problem with your plugin it might be that the reason is a wrong value stored in the prefences. Some times can not change / correct this value because the plugin is not running (you see the chicken and the egg?).
If you rename your original prefences file lr starts with a blank new one and your plugin also. Perhapst this solves your problem. Otherwide delete the new prefences file and rename the old one back.
If you use a mac here you can find the location of the prefences file
http://helpx.adobe.com/lightroom/kb/preference-file-locations-lightroo m-4.html