Target dll has been cancelled

I am new to embedded programming. I have the 3S811 Eval Board and KEIL compiler. I am using KEIL Ulink 2 to do JTAG debugging.
I get the famous "Target dll has been cancelled" error when I try to debug the FreeRTOs_Demo.
I have reinstalled the FDI drivers twice but to no effect.
I have a NXP board which works just fine so I know uVision is fine.
Does anyone have a step by step solution?