Migrate VO2.5 -> Vo2.8

re: previous message ListView:KeyDown method

Hey all, - loaded up VO2.8 (on Geoff's suggestion) and im****t AEF, so
far, so good ...

.... anyway I've got heaps of errors (as many others did); that's fine,
I'll fix 'em. But, identifying the error is not so easy in some
places; some things are obvious, ) instead of }.

Here's the question -

ERROR - Missing declaration of typed method xxx in class xxx : 51452
ERROR - encountered unprocessed CLASS entity xxx : 52305
ERROR - Method : has been strongly typed but has not been declared in
the class : 51450

Can anyone please advise what I should be looking for here?

Regards
Tony