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John G
User
Joined: 12 Sep 2007
Posts: 3
Location: Halifax, NS
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 Posted: Wed Sep 12, 2007 1:00 pm Post subject: Invalid File Format |
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I have a series of data collected into a PLW file using a TC08. I opened the file using PicoLog Player, added some notes to the file and then closed the program. Afterwards, when I went to open this file again, I get an error popup window stating "Invalid File Format". Currently the file is only 11 KB large, which concerns me since previous files of similar data were around 170 KB (I don't recall the size of this particular file prior to the corruption event). Is there any way I can recover this file and data? I've spent 2 days setting up an experiment to collect this data, so I need to do whatever I can to try and recover it. Any help is appreciated.
I've attached the invalid file
Thanks
John
| Description: |
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Download |
| Filename: |
Clarks Trial 1b Sep 11,2008.PLW |
| Filesize: |
10.46 KB |
| Downloaded: |
42 Time(s) |
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PeterF
Site Admin
Joined: 07 Jun 2007
Posts: 80
Location: Cambridgeshire
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| Posted: Thu Sep 13, 2007 12:08 pm Post subject: |
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Hi John,
Unfortunately you appear to have overwritten a large data file with a small, empty one of the same name. The new file only contains setup info, no data. It would be very difficult to recover anything of the old file in this case, because of the over-writing. It is always best to make copy of an original file first, before doing any manipulation.
Regards,
PeterF.
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John G
User
Joined: 12 Sep 2007
Posts: 3
Location: Halifax, NS
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| Posted: Thu Sep 13, 2007 12:27 pm Post subject: |
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| That's unfortunate. Looks like I have another day's work to re-do my trials. It's too bad the program does not ask before overwriting. I was not given an option to save or create new - I simply added notes to the file that was open.
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John G
User
Joined: 12 Sep 2007
Posts: 3
Location: Halifax, NS
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| Posted: Thu Sep 13, 2007 12:29 pm Post subject: |
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| What about the fact that the file is now an invalid file format? Has anyone run into this before? It looks like I'm going to have to export data to excel as soon as I capture it so that I don't risk losing it.
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ziko
Site Admin
Joined: 01 Dec 2006
Posts: 586
Location: St Neots
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| Posted: Tue Sep 18, 2007 3:16 pm Post subject: |
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Hi, the fact that it says invalid file format is because the file has lost its data and has become a settings file but the extension has remained as a plw .
If you change the file extension to .pls then you can open the file as a settings file in PicoLog Recorder.
It should not do this, I and a colleague tried to recreate this problem with no success.
Is the problem repeatable, if so could you tell me exactly what steps you have taken for this to happen.
Kind regards
Ziko
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