Batboard

i have a gm950 and cannot conect to it using my setup., i have tried differend cps and still no joy, if i use the rear socket on the radio i get a buffer overflow message, any ideas??
using winxp and a maxon rpc-m300xx ribless cable, i have tried a motorola rib but also get same message when using rear socket ,mic socket dont seem to work for programming??

i don't think you can use a maxon cable on anything motorola you need the correct rib and cable