Does not have the correct structure

I have downloaded kodi addons from the download section and have tried to install them (on two different android devices m8 and MyGica) on both devices it tells me that the addons do not have the correct structure - tried Mashup & spinztv

Could someone please tell me how to install (gone to "install from zip" > External storage > Download > Mashup v1.4.3.zip) and the same with spinztv.zip but to no avail.

Anyone help??

Grahamc

ps I have loaded addons in before with no problems some sites say the addons are for helix only the new kodi I found (I think) is isengard - is this something to do with it?

I thought mash up finished about a year ago, don't know if its back on now.