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Re: Trouble with Mathematica 4.1 after uninstalling Mathematica 3.0

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  • Subject: [mg30270] Re: Trouble with Mathematica 4.1 after uninstalling Mathematica 3.0
  • From: "Alan Mason" <amason2 at>
  • Date: Sat, 4 Aug 2001 20:02:00 -0400 (EDT)
  • References: <9kdbjk$f38$>
  • Sender: owner-wri-mathgroup at

The exact same thing happened to me.  I solved the problem by
reinstalling -- it was not necessary to change the password.  In my case,
the trouble definitely was in how notebook files (*.nb) were registered.
When I double clicked on a notebook, instead of Mathematica 4.1 starting up,
I got the Windows menu asking me what application I wanted to assign *.nb
files to, so I clicked on Mathematica4.1.  But even this  didn't work, so I
reinstalled.  Once again, it didn't work, so following perverse instincts I
checked in Control Panel/Files, looked under .nb, and discovered the system
thought I'd customized *.nb files (which I guess I did, the first time
around).  Problem was solved by clicking on Default.

Hope this works for you (but I think you'll have to reinstall--again, use
the same password).
"Emilio Martin-Serrano Sobrino" <emilio.martin at> wrote in message
news:9kdbjk$f38$1 at
> Hi,
> After having been using Math3 and MathV4.1 together, today I uninstalled
> MathV3 with the standard utility UnShield.
> It seems that UnShield has also erased the registry information for
> MathV4.1. The icons for all the notebooks have disappeared and they can
> be run by clicking on them (this clicking does not launch MathV4.1). And,
> though the notebooks can be loaded from MathV4.1, they look now different
> (fonts and bullets are rather different, for example).
> I hope this can be restored by re-installing the system, but I would not
> like to deal with a new password.
> Any clue?
> Emilio
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