Solver Manager error message
 

I am running an oscillating aerofoil problem using CFX5.7.1 sp1, however recently the solver manager has been stopping approximately half way through the simulations and shutting down, with the following error message being displayed:

An error has occured in CFX5solve

The CFX-5 Solver Manager C:\Program Files...\SolverManager.exe could not be started or exited with return code.

This hasn't started happening till recently, when varying my timestep size. It has currently happened with 200 and 150 steps per cycle, however 100 steps was fine. The simulation is set to run for 100 cycles.

Any help would be greatly appreciated.