I have found a Dwemer convecton and searched it then went to my items and picked the warped gem stone and it does nothing. Will not go into the oven. Prior to this In the same location I went to my magic and picked the Arniel's convection. Am I doing something incorrectly.

Yes, you keep posting in the wrong forum

Skyrim has its own forum http://www.gamesas.com/forum/117-v-skyrim-skyrim-special-edition/
I'll move this thread to the correct place.