Cosmos Transient Thermal Analysis vista 64

Was trying the run a transient thermal analysis of a motordissapating in and aluminium body. Experimented at home using Vista64 bit. Could not get anything remotely sensible from cosmos and italso looked like the transient time steps are not workingcorrectly. All times showed the same set of temperatures. Got theproblem to run at work on XP 32Bit.
I have run some large static analysis (1,500,000 D.O.f approx.)onVista 64 bit ok though.
Is there some bug here with cosmos on vista 64?SolidworksSimulation