The icon is showing in the task bar. I leave the application running so maybe that is why. I don't see anything in event logs or the CRD error logs. I'm stumped. As for the call to support... I've been told they do not offer phone support. Everything is done through email, which is a pain in the neck IMO. It takes days just to have quick conversation since I'm in the US and the support is in the UK.
My experience of their support is quite different. I simply go to Help - Support - Technical Support and fill in the form and they usually get back to me within half an hour if not sooner with an answer - and I am on the West Coast!
I don't think leaving the application open is a contributant to your problem...