Hello,

Mathematica 7.0,

As sometimes happens, Mathematica went into some loop,
waited and waited, and after 5 cups of coffee, could not
wait more, so I shutdown the process.

Now my notebook will not open, it says it is corrupted.

I tried to fix it using a text editor, but could not.

Here is the original corrupted file, in this folder:

http://12000.org/tmp/nov_27_10/

I was wondering if there is a tool which will help in
this? May be some automated tool which can fix a corrupted
notebook?

I do make sure I save my notebook all the time, but it looks
like Mathematica does not make a backup copy of the notebook,
so I am stuck. This means I will have lost about 5 hrs of
work if I can't recover this.

Why does Mathematica not automatically make a side backup
copy of the notebook all the time? Like say MS Word does?

thanks for any ideas and help.

--Nasser

On 11/28/2010 6:53 AM, Nasser M. Abbasi wrote:
> Hello,
>
> Mathematica 7.0,
>
> As sometimes happens, Mathematica went into some loop,
> waited and waited, and after 5 cups of coffee, could not
> wait more, so I shutdown the process.
>
> Now my notebook will not open, it says it is corrupted.
>
> I tried to fix it using a text editor, but could not.
>
> Here is the original corrupted file, in this folder:
>
> http://12000.org/tmp/nov_27_10/
>
> I was wondering if there is a tool which will help in
> this? May be some automated tool which can fix a corrupted
> notebook?


I have *never* succeeded in recovering a notebook that was corrupted to 
the point of not opening. It doesn't happen very often anymore, fortunately.

-- 
Helen Read

I concur. I have never been able to recover a notebook. I think it has 
only happened to me once since version 6. Keep copies!

Kevin

On 11/29/2010 6:09 AM, Helen Read wrote:
> On 11/28/2010 6:53 AM, Nasser M. Abbasi wrote:
>> Hello,
>>
>> Mathematica 7.0,
>>
>> As sometimes happens, Mathematica went into some loop,
>> waited and waited, and after 5 cups of coffee, could not
>> wait more, so I shutdown the process.
>>
>> Now my notebook will not open, it says it is corrupted.
>>
>> I tried to fix it using a text editor, but could not.
>>
>> Here is the original corrupted file, in this folder:
>>
>> http://12000.org/tmp/nov_27_10/
>>
>> I was wondering if there is a tool which will help in
>> this? May be some automated tool which can fix a corrupted
>> notebook?
>
>
> I have *never* succeeded in recovering a notebook that was corrupted to
> the point of not opening. It doesn't happen very often anymore, fortunately.
>

This happened to me once, and I also tried to dive in with a text
editor, but couldn't figure it out.

When I edit a large notebook, I typically "save as" at every major
milestone with a new suffix number , to avoid that unfortunate
outcome.



On Sun, Nov 28, 2010 at 6:53 AM, Nasser M. Abbasi <nma@12000.org> wrote:
>
> Hello,
>
> Mathematica 7.0,
>
> As sometimes happens, Mathematica went into some loop,
> waited and waited, and after 5 cups of coffee, could not
> wait more, so I shutdown the process.
>
> Now my notebook will not open, it says it is corrupted.
>
> I tried to fix it using a text editor, but could not.
>
> Here is the original corrupted file, in this folder:
>
> http://12000.org/tmp/nov_27_10/
>
> I was wondering if there is a tool which will help in
> this? May be some automated tool which can fix a corrupted
> notebook?
>
> I do make sure I save my notebook all the time, but it looks
> like Mathematica does not make a backup copy of the notebook,
> so I am stuck. This means I will have lost about 5 hrs of
> work if I can't recover this.
>
> Why does Mathematica not automatically make a side backup
> copy of the notebook all the time? Like say MS Word does?
>
> thanks for any ideas and help.
>
> --Nasser
>
>