"Loading Directory" Dialog won't go away

I'm making a plugin and it's working well. The only thing is that after the script does what it's supposed to do, the "Loading Directory" dialog stays up. I can make it go away manually by pressing the cancel button, but is there a way to force it to close automatically? I've checked my log and there aren't any errors.

I figured it out. My problem was that I was launching a class with xbmcplugin.addDirectoryItem(isfolder=True). Changing it to isfolder=False fixed the problem.