Stack opens manually but scripts think it's corrupted?

[Dan Shafer]

I have a stack that I can open from the File menu in RR, or by  
double-clicking it in Mac OS X Finder. No problems. But if I try to  
open it or go to it using the URL keyword, either from a handler or  
from the Message Box, I get the same result every time: an error  
indicating the stack is corrupted.

I'm sure it's not open before I try to open it with the script. Here's  
the syntax of the command I'm  using:

go stack URL "file:/Users/dshafer/Documents/ch5foo.rev"

Any clues?
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Dan Shafer
Technology Visionary - Technology Assessment - Documentation
"Looking at technology from every angle"
http://www.eclecticity.com
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