Hi,
I've just booted up my PC for the first time since around when I last replied on this thread, and it put the update through this time. Not sure what changed between then and now, but I'm pleased to say that this issue is now resolved. Thank you for your help! Apologies if I made things difficult by being very on-and-off of the thread, I've had to travel around a lot recently so I've had quite limited access to my home PC. You've been very patient though and I really appreciate that. I'll put something through on the donation thing in a moment. Cheers again!