Right after i start building GC the units just vanish and only shadow remains, also i cant move the camera and interact with the game.
Game crushes after i start building GC
Most likely due to playing a recent Nomads game. You can host a game on FAF Develop to fix the issue up until your next Nomads game.
Nomads fix in the works
This has been fixed for the FAF game type with patch 3730 (released earlier this evening) - no need to host on FAF Develop. The nomads mod is still broken in this regard: playing Aeon on the nomads is a guarantee to crash your game. As Deribus says, its maintainer is working on it.
A work of art is never finished, merely abandoned