The nonexistent bots being immediately eliminated is an occurrence in the BattleBox arena. It happens when you try to play a Battle Royal, because there are only two proper start points, the red and blue squares. The other two are out in space somewhere, which is why they get eliminated straight away.
A robot starting high up normally happens if something has been built a distance underneath the chassis. The alternative of this is the robot starting through the floor, and dropping through until the chassis reaches it, then just sitting there.
Robots flying around the arena is what is known as a "havok bomb", caused by the instability of the physics engine. It happens when there are either a lot of flails on a robot, or when a motor has been knocked off. Sometimes the cause is unclear, but there's no way aroudn this, unfortunately.
Hopefully this helps. =)
The first glitch happens to me in the Robot Wars Arena, and only occasionally, so I don't think that is the cause. The second one also only happens occasionally, and doesn't occur every time I use a particular robot. For example, sometimes Dominator 2 starts in the correct position, but occasionally it will start really high up.
Anyway, can anyone confirm whether DSL 2 is compatible with the 1.3 patch or not, or whether I need the 1.2 patch? Also, would pasting the folders from my previous installation cause any problems? I want to try and pinpoint what is wrong.