Open Source vs Affordable Indie 3D Game Engines?
I can't stress enough to avoid TGEA. I can't speak for the original engine (TGE) but the new version has no documentation, and a pervasive attitude of "If you can't figure it out without help, you shouldn't have gotten the Advanced Engine".
The engine is simply not geared towards direct interfacing. If you're happy using TorqueScript to do everything, then give it a shot. If, like me, you need to interface with other C++ components, you're in for a tough ride.