Breakpoint problem - how to get out of it?

[Graham Samuel]

Folks
  I've just encountered a problem already bugzilla'd (by Mattias 
Alveteg) as number 639 - Rev 2.1 on the Mac crashes when it reads a 
stack produced in an earlier version of Rev (in my case 2.0r2) which 
is apparently corrupt in some way to do with breakpoint data.

Looks like I can't go forward (to 2.1) and I can't easily go back, 
since I know the latest version(s) of my stacks developed with 2.0r2 
are corrupt. They are however still readable with caution and with 
message activity disabled.

Has anyone any advice on how to create a 'clean' copy of my stack 
file? I have earlier backups, but some code and some controls only 
occur in the defective stacks. Since the IDE doesn't allow one to 
have two or more stacks open with the same name, I can't just copy 
and paste objects and scripts from the corrupt version to a new file 
based on an earlier, non-corrupt backup. I need a recovery technique 
that is not too tedious, but I can't think of anything better than 
creating an intermediate file which doesn't use the same stack names 
and using it as a repository for the new stuff, thus creating a kind 
of bridge between the corrupt version and the (hopefully) non-corrupt 
one.

Can anyone think of a better technique? I have deadlines looming.

TIA

Graham
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          Graham Samuel / The Living Fossil Co. / UK & France