@nasty
Sounds rather like a problem with the MMU setting thingymabob for the mediator. I had a lot of problems with 680x0 Warp3D on the voodoo3000 test system I have on loan here until someone pointed it out to me (my main machine is a BVision based one and has no such foibles). Try setting ENVARC:Mediator/MMU to "Yes" if it isn't already.
That seems to work fine here.
