Vaughn, thanks for your personal response. I confirm that has fixed the error. I did had a backup on that was empty, but it also was at 0 durability.
I am a huge fan of these types of games by the way and I have done a lot of searching to find games like this. Wayward is at the moment the best survival game I know of. Another favourite of mine is stranded without a phone? on the iphone. Its an old one now. Anyways, I think you have done a great job with this.