Spring RTS Engine

Did someone tried the Buzzsaw ? Each time I try to build one, I cannot make it to attack a zone. Sometimes, it doesn't rotate, or rotate but doesn't fire. And one time, it fired, but slowly. I had plenty of energy, that was not the problem. It tried with the Vulcan, and all is ok with it. It fires a...

I have exactly the same problem.

The particles, nanospray and laser beems disapear sometimes randomly.

I have an ATI card, with Catalyst 8.10.