Help! "MIDI Driver Vfx Control cannot be opened"

Hi,
Been using Vfx for about two weeks.
everything was great until a few days ago until I got this message each time I open Mixvibes: "MIDI Driver Vfx Control cannot be opened"
Software works fine and 'knows' controller is connected but it won't respond.
The controller shows either the blue light or when I press it, I get the hibernation chaser lights (left to right LED motion).
I successfully updated to latest version fo Vfx the day I received it all and all was fine until recently.
I don't think I've made any great changes to my system.
I have, of course, uninstalled the software, rebooted, re-installed and re-updated, etc. a number of times and now I don't know what else to try.
Do any of you guys have any ideas for me to try?
Thanks in advance.
Been using Vfx for about two weeks.
everything was great until a few days ago until I got this message each time I open Mixvibes: "MIDI Driver Vfx Control cannot be opened"
Software works fine and 'knows' controller is connected but it won't respond.
The controller shows either the blue light or when I press it, I get the hibernation chaser lights (left to right LED motion).
I successfully updated to latest version fo Vfx the day I received it all and all was fine until recently.
I don't think I've made any great changes to my system.
I have, of course, uninstalled the software, rebooted, re-installed and re-updated, etc. a number of times and now I don't know what else to try.
Do any of you guys have any ideas for me to try?
Thanks in advance.