I have some HD footage that I wish to record to a blank BD disc (approx 23gb of material) but on attempting either to burn the stuff to disk directly or make a disk image first, the process is quickly interrupted by a system message: "Could not record the disc because there was not enough memory." and "Result Code = -108". I currently use a 21.5in (Late 2013) iMac with 8gb total RAM. Having just performed a very similar exercise with some other HD footage of mine without a hiccup I'm left wondering why this has cropped up now? Or how to remedy it? Here's a screenshot of Toast with the material assembled.