I've just downloaded the LRtimelapse 4 to test out and when I go to render the video, I can only select 720p and 1080p. I understand that the options with a * next to them are only for the pro version, but the 4K option doesn't have this.
Justin wondering if there is something I need to do to enable this option.

There are 3 types of "Licenses" - Free (no license at all) - here you will only have 720p and 1080p.
Private License: will enable 4K. Pro: will enable all modes.
Please checkout the feature matrix to learn more: http://lrtimelapse.com/features

great, thanks for your help.