MFME - Monopoly Gold - Pay Unit Error 17 ?

I was just setting up Monopoly Gold and, after I'd resized the layout and added payments for 10p / 20p / 50p etc. I get the Error 17 on start up?

The original file still works fine (great work Vectra!) but I can't get rid of this error.

I've tried clearing the RAM and messing around swapping different files with the original but to no avail?

Anyone any ideas?

Thanks