Stopped by unknown trap/breakpoint

Hi Folks,

I'm in the process of getting GreenHills Probe to work with our MPC5xx
modules, and I'm getting stuck on an 'sc' syscall asm instruction
within the code.  It reports "Stopped by unknown trap/breakpoint"

Here are my settings:

- MPC565 processor on Engine Controller. (Also tried on one of our
MPC555 Modules)

- The tick box "Service System Calls" clear in the connection dialog,
and I've also manually issued the command "target syscalls off"

- The module and code is good, because without debugger it runs as
expected.

- I can debug, step and run using VisionClick with VisionProbe
debugger.  (My task is to upgrade us to the GHS probe)

- I use the same initial register setup with GHS as I did for
VisionClick (setting chip selects, IMMR etc)

With GHS probe and MULTI, the system will never let me step or run
past this 'sc' point.

Has anyone else experienced something similar?

Is there a solution I can try?

Thanks

John Davey