Hi Folks - thanks for your answers.
When the old A7 got corrupted, I copied all the files (and old A7) onto a disc and then onto a memory stick. Both have an old doc file on them, and that copies across OK - it is just the old A7 files which will not copy. I can select them, and even add a new 'block' to one of the files, but it won't copy across.
It would seem that there is something in the old files which is preventing the copy - but I don't know what !!
Any other ideas please?

JUST found out that I can copy script files and sections from the 'old' manual ok - it is only the WED layout and the parts in it (WMB and MED)that will not copy.
Kind regards, Davd