mine was something quite simple really in the end!! once it had updated and was stuck on the lock screen ie you put your password in & it just refreshes on the lock screen i rebooted in safe mode then ran the newest ultraux theme patcher rebooted & voila here i am now on 1809 had a couple of teething issues since last week but think i have got over them Ive just got perfectdisk finishing up on optimizing my drive as it had thrown a bit of a wobbler but nothing too drastic so ye just ironing out the problems now..(hopefully)!! really didn't want to have to a fresh install if i could help as on a 2tb drive!! dare say i could have done a fresh install on top but then you have to mess about with all your programs reinstall everything etc etc just becomes a headache!!! Anyway so yes that's all i did in the end really..!!....