Hi Sailor Steve,
Thanks for your patience and understanding on this

.
I have had a look in my 1024_768 and have discovered that the G3F 1300 block runs all the way up to 1336 and doesn't end at 1307 - could that be what the problem is? If I just delete 1300 - 1307, would the remaining 1308 - 1336 cause the crash?
In previous attempts, I had removed the last block in the Dials_cfg and renumbered the figure at the top to one less (53 to 52 I think it was).
Advice greatly appreciated.