Mouse crashes Emaga5

When I start Emaga5, I can play using the keyboard. But when I start using the mouse, the game blows up ('do you want to send a report to Microsoft' kind of blow up). Sometimes, if I move the mouse very slowly I can turn the avatar left or right a little, but too much (whatever that is, it ain't much) and it blows up. I can also fire the weapon as long as I don't move the mouse 'too much'.

I have tried two different mice, with no perceptible difference.

I have not changed any of the code. The code is straight off the CD.

OS is XP Professional.

Same thing with Emaga6, although Emaga4 works just fine.

I will be happy to provide any additional info.

Thanks
Steve Bryant