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Re: Losing Old Mathematica 2.2 Notebooks in Mac OS 8 Install?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg9360] Re: Losing Old Mathematica 2.2 Notebooks in Mac OS 8 Install?
  • From: gray at engr.psu.edu (Gary L. Gray)
  • Date: Sat, 1 Nov 1997 03:33:48 -0500
  • Organization: Penn State University - Engineering Science & Mechanics
  • Sender: owner-wri-mathgroup at wolfram.com

In article <631ks5$o64 at smc.vnet.net>, siegman at ee.stanford.edu (AES)
wrote:

> I recently did a "clean" install of Mac OS 8 (replacing 7.5) on a
> PowerMac 8600, and then installed Mathematica 3.0 and then 3.0.1
> replacing 2.2.
> 
> A large number of my old Mathematica notebooks can now no longer be
> converted, even with "Open Special".  If I look at them with a text
> editor, the usual Mathematica prelude and stuff are there, and a small
> amount of content (cell text for a few but not all of the cells, etc.).
> There is also a line just after the prelude saying "Cache xxx" where
> xxx is some number.
> 
> What happened here?  Is the link to this cache lost?  Any way to
> recover?  ("Open Special" does NOT work.)

What exactly is happening? Is the machine locking up? Is Mathematica
giving you an error message. I frequently convert Mathematica 2.2
notebooks to 3.0 notebooks without any trouble on an 8600 running Mac
OS 8. I'd be surprised if it has anything to do with the new OS since
many of the notebooks I convert are ones I have had lying around since
I was using 2.2 on an 8100 running 7.X.


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