Glass part not showing in game but showing in Workshop?

[Elias943]

Hello everyone.. :)
Once again im converting the big TV from the sims 2.
If you can remember it has glass shelves.
Well i cloned the normal TV from TS3 which has glass shelves as well.
The groups are fine and everything else is fine.
I use workshop in order to check my mesh before i put it in game.
The mesh looks great on workshop with the glass.
When i enter the game there is no glass at all... :/
What should i do ?
I tried several things but none of them worked..

[BloomsBase]

check if you grouped and have loaded the meshes correct.
Some meshes have diffrent boneassignements assigned to glass parts, check that too.