Regarding the vtuner-interface, this is still in beta-phase, thus we are not officially supporting it. In case anyone has problems with it, feel free to write me a mail, but it's not yet a feature that is mature enough that it will be supported officially.
I was told (when I started to use vTuner when it was just implemented in DM software) that you can not close/re-open vTuner. You can open it only once, and if something went wrong with the pump (crash?), one has to reboot the receiver.
Has anything changed since then?
Is it possible to close vTuner now?
If not, do you plan to implement such features (it's painfully long to reboot the system after each software development iteration).