After another two days in the forest, set to shoot videos with a fifteen second delay, the camera worked OK but still will not operate correctly when set to a shorter delay time. I had a word with the importers and they've asked me to send it to them for evaluation of the problem.
Not much more I can do about this until they've had time to look at it, so for the time being my monitoring is on hold.
Hope to start making some Squirrel feeders next week, and will be using them in conjunction with trail cameras to try and determine presence/absence in areas which are difficult to survey by looking for signs. It's a bit of an experiment but I'm sure it will work.