[bumblebee]

Good to hear you have it restored Graeme!
Sometimes glitches occur and it is not certain it is the software itself or some OS weird thing. Let's hope it never happens again. In the past I have had corrupted files using various software but difficult to track down what happened. Once you restore, it is such a relief.

Thanks for reporting here also, so we can keep an eye out for it. I knew you would know things to do to try restoring, but others might come across something similar and this thread might become helpful.