Help

Hi out there,
I’am trying to install a Roland system 1 to control the roland plug inn synths as sh-101 and so in cubase elements 8 but this seems not to work.
I have made a new instrument in devicemanager and midi inputs and outputs are active.
When I push the keyboard on the system 1 I hear the plug Inn and the midi input shows activity in the controllers beneath the cubase screen.
Still I can’t get functions like sending and saving sounds and other functions to work properly.
Tweeking the knobs land sliders works fine.
When I set the dialogbox for the plug Inn to system 1 or system 1 controller I get the message : 'either the plug out is not connected…, check connection.
System 1 driver is installed and updated.

Roland system 1 ver. 1.20
Cubase elements 8
Windows 8
Please help me,
Thank you.