Addons Not Working!

In My MCPE, I used to love addons and added tons of them to my game. Then, when 1.2 came along, for some reason, all the addons disappeared and when I tried to even add new ones on, Minecraft said that it installed it but never let me even see the addon or any of MCPEs addons. When I tried to reinstall the old addons, It said that a duplicate addon was found and deleted the new version. Help?