You may need to clear the cache.
Here is my mini tutorial outlining the procedure http://corkyo.wincustomize.com/Articles.aspx?SID=5463&AID=82461
In this case, you would simply delete the ObjectDock cache folder.
You may want to: unload ObjectDock > clear the cache > uninstall any ObjectDock programs > reboot machine > delete any ObjectDock folder left in "C:\Program Files\Stardock" folder > install ObjectDock Plus.
Note - make sure to save any files that downloaded and installed into the ObjectDock sub-directory after the initial ObjectDock installation.