VM151 RGB controller

I am working with the VM151 rgb controller module. According the user manual it is possible to controle the unit with the K8074 USB Rf module. However, the module does not response on the down load mentioned in the VM 151 user manual. Whatever I try it does not respond, nor does de tx led on the pcb light up when I send a message from the demo software. What might be the cause? When I connect the USB module I see that com3 is the port that appears and I place the setting as mentioned 2400, 8, N 1. After I pushed on te button connect and after that show adress, nothing works?

Theo Kanters

Did you install the jumper SK2 on the K8074 (see manual)?