Thank so much for these suggestions – I will look in to them over the long weekend.
On image size – I don’t know about pixel size – I’ve been going by Mb. WordPress media upload gives a max of 8Mb and the ones I’ve been trying to upload recently are about 1Mb. I’ll look at the pixels – thank you, though Ive been uploading a stack of these for some months and have only recently hit a problem. I don’t think I’m doing anything different on images atm, but it may be a cumulative thing, I guess. Thank you for the thought on this – I will definitely look at it.
With any luck, one of the kids’ partners who will be here this weekend will be able to help me look at this PHP issue – I’ve managed to avoid even peeking at code so far, though it sounds as though this may be were I have to start learning… I’m a bit old for this, but these helpful pointers have ‘almost’ given me the courage to try – thank you 🙂
Many thanks, everyone – your time and thoughts are very much appreciated.