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Re: Corruption of file

• To: mathgroup at smc.vnet.net
• Subject: [mg129089] Re: Corruption of file
• From: David Bailey <dave at removedbailey.co.uk>
• Date: Fri, 14 Dec 2012 03:00:34 -0500 (EST)
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On 11/12/2012 07:24, Alexei Boulbitch wrote:
> Dear community,
>
> During the work evaluation a cell I got the message:
>
> "There is a syntax error in the file being read. Do you want to open it as
> a plain text?"
>
> Upon pressing "Yes" I got the message:
>
> "There was a syntax error on line 541095 in the file: 2Dgraphics.nb.
> The error was:
>
> bdnhsNoXjUtzE3OjHyBhBxTcduHehni+"
>
> And the question, if I wish to open it as a plain text file. Upon the pressing the "Yes" button the hang up starts.
>
> The file in question cannot be open by Mathematica any more.
>
> It is Mathematica 9 on Windows XP.
>
> Alexei BOULBITCH, Dr., habil.
> IEE S.A.
> ZAE Weiergewan,
> 11, rue Edmond Reuter,
> L-5326 Contern, LUXEMBOURG
>
> Office phone :  +352-2454-2566
> Office fax:       +352-2454-3566
> mobile phone:  +49 151 52 40 66 44
>
> e-mail: alexei.boulbitch at iee.lu<mailto:alexei.boulbitch at iee.lu>
>
Quite apart from the failure to open the file as plain text - which is 
not really that useful, because it will display BoxForm structures - 
there are surely two important questions:

1)      Do you have any idea what caused the corruption?

2)      Is the notebook important to you, and if so, is it backed up?

Unless this is a bug in Mathematica 9, this sort of thing can happen if 
a notebook is written back to a disk just as the system is shut down (or 
a removable disk is pulled out).

If you need the data that has been corrupted,  you can probably retrieve 
most of it using a text editor on the file. Try opening an uncorrupted 
notebook with a text editor to see what they contain.

David Bailey
http://www.dbaileyconsultancy.co.uk