[TheCasa]

1. Your dropbox\Tv Shows directory has not been added as a source in XBMC and had it's content type set to "TV Shows" (this should be done after some .mpg's exists in the dropbox). From your screenshot, it looks like the .mpg is in the library, so this probably isn't the issue.

I think this is the problem! They were setup as sources when the dropbox was empty! I'll try it when I get home and see if that resolves it.

(most likely) - The path to your TV Shows directory in XBMC is different than the path you specified in the Config file. For example, one uses a network share and the other uses a local path. They have to be the same. I personally use a network share "\\onyx\\dropbox\\tvshows" in the config file, and in xbmc I set the source up as a smb path to the same directory.
To troubleshoot this, can you post the contents of your sources.xml file (in XBMC's userdata directory) as well as your dropbox config in the Config.xml so I can compare.

I think I'm ok here, but I'll check that as well

The query to your SQL database to determine if the dummy .mpg files is in the library is failing. However we would see this in the logs as an ERROR and I don't think we've seen that.

You're right, no errors. I'll post the log when I get home if resetting the sources doesn't solve it.

As a disclaimer, my testing is limited to a Windows environment so things may be slightly different if your running a different OS

I'm running windows, so that's cool.