Mobile Connection Error
Could not create network settings.
Try re-starting the application or your Mac.
If the problem persists, try deleting the preferences, or re-installing the application.
The "NetManager" service could not be used because the application could not be found.
Try reinstalling the application.
This looks to be a known problem, as per this: -
Preview Edition of Vodafone Mobile Broadband for Mac
If you have a brand new Apple Mac with OS X 10.7 Lion, or have just upgraded your Mac to this system, older releases of the Vodafone Mobile Broadband for Mac application may not run correctly. Vodafone is currently verifying the application on OS X Lion, and will release it as soon as possible. In the meantime, if you have OS X 10.7 Lion and would like to manage mobile and AirPort connections, and SMS text messaging on your Mac, you can download this special Preview Edition of Vodafone Mobile Broadband.
Full Lion-ready Release of Vodafone Mobile Broadband for Mac
The Preview Edition will only be available until the full OS X 10.7 Lion-ready version of the Vodafone Mobile Broadband for Mac application is released. After 9th September 2011, the Preview Edition will advise you to download the latest release, which will have full support for OS X 10.7 Lion. The full release will completely replace the Preview Edition, and remove the advisory message.
and there is a "beta" version of software that *MAY* just work here: -
Am downloading it now ….