Enewsletter and cron seems not to be working

Hi, enewsletter is all set up and running (latest version with WP4.0 bug fix) and today for teh first time I tried send via cron.

It has queued up teh messages and they sit their under Cron (enabled)

I can see the cron job scheduled (every two minutes ) and there is enough traffic to trigger it, also Crontrol plugin allows me to manually trigger.

But nothing is going into the sent queue.

I am not getting any errors on screen (I'll have look at teh logs in a minute).

Basically is there an issue? How do I investigate it? And also what is teh method of 'dequeing' the cron messages (e.g. via phpmyadmin ) so I can go back to the non cron method and get this sent?