Thanks for the repsonses.
CR Server version: 2013 SP01 - 14.1.1.1036 (downloaded from SAP a few weeks ago)
We have one workstation with a licensed version and one with an evaluation version. Both experience the same issue.
CR Developer 2013 Support Pack 1 - Version 14.1.1.1036
CR Developer 2013 Support Pack 1 - Version 14.1.4.1327
Not sure what CR Designer is you're referring to.