gdb cable disconnected Error

Hi there i’ve been trying to download the nafrpapp example program onto an ARM 7 processor using the RAVEN debugger and GDB but cannot get the debugger to connect. i’ve checked out and downloaded the Raven Test program. the test passes but gdb still tells me that the cable is disconnected. Anybody got any ideas or suggestions. it would be great to at least get goimg with this thing.

What type of board are you using?