I really do hope you can help. I have been trying to setup my new dosing units without success - I have the software downloaded and all is fine with that, it is seeing both dosers but when I go to configure the slave unit it keeps coming up with PAB*device not responding even though it is seeing it in the control software. I have tried different versions of the software but still the same issues. both units have a solid blue light on them and I have made sure the USB driver is up to date. I really don't know what is going on.