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Re: Unfortunate Side Effect of Upgrading to Mathematica v9

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  • Subject: [mg128869] Re: Unfortunate Side Effect of Upgrading to Mathematica v9
  • From: George Woodrow III <georgevw3 at>
  • Date: Sat, 1 Dec 2012 04:35:10 -0500 (EST)
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I just checked, and the .nb files open correctly in Mathematica. You may have an anomaly peculiar to your system.

I did not check, but I am sure that the .m files will still want to open in Xcode if you double click the file icon. 


On Nov 30, 2012, at 5:57 AM, James Stein <mathgroup at> wrote:

> I upgraded from v8 to v9 this morning, and all
> pre-existing Mathematica Notebook files (extension .nb) have been modified
> to open with the AppleScript editor.
> This is easily remedied by applying the "Get Info" command on one of the
> notebooks; changing the "Open With:" item from "AppleScript Editor" to
> "Mathematica", and clicking the "Change All" button to effect the change
> for all notebook files --- but this has the nasty side effect of changing
> the modification date of all your notebook files to the current date&time!
> This is unfortunate because notebooks in a given folder can no longer be
> compared by age.
> I hope I made some error and this does not happen to others.....
> If others wish to do this, you might wish to do this on a folder-by-folder
> basis: Select all the notebooks in a folder, press the option key along
> with the command key and you will get a single Get Info window for all your
> selected notebooks; this allows you to make the change for several
> notebooks at a time, but not all notebooks on your computer.
> For those who have little or no use for the AppleScript editor, perhaps a
> different solution is to replace the AppleScript Editor application with an
> alias to the Mathematica application. I haven't tried this yet....
> There may be utilities that allow you to change the "Open With" information
> without changing the file dates. I haven't searched for them yet.

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