addon does not have the correct structure

Hi,

I'm new in general to XBMC development...but I installed the gomTV addon (https://bitbucket.org/henrik/plugin.video.gomtv.net)on my AppleTV(2nd gen) and noticed the plugin had some problems...so I downloaded the source and made some appropriate changes, however now when I try to install the add on via zip file I get the following error:
'addon does not have the correct structure'

I've verified the structure is the same as the current version so I'm not sure if it needs to be zipped a special way or something? Anyone have an idea?

Thanks