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Corrupt .gno file - Is all lost??

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Posted Monday, November 14, 2011 - Post #29408
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GenoPro version: 2.9.0.6

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Hey Gang,

OK, so, I was working away on my tree, saved, closed down the program, and went to do something else.

I come back, and decide to do a little more work. I go to open the file, and I get this message:

Unable to decompress data - the compression format is unknown or its data is corrupted

OK. So, is all my data lost?? Or is there a way to fix/recover it??


John Fleming
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Family Tree?? Try Family Shrub.


Edited: Thursday, September 10, 2015 by GenoProSupport
Posted Monday, November 14, 2011 - Post #29412
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GenoPro version: 3.1.0.0

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GenoPro files are .xml files, saved in a zip format.
Try making a copy of the file and renaming it as a zip file and then extract that. If it looks rubbish then you are in trouble. If your data is visible it should be recoverable


Edited: Thursday, September 10, 2015 by GenoProSupport
Posted Tuesday, November 15, 2011 - Post #29416
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Well, I tried that. No go. I used a ZIP repair program too. It seems the file size is wrong. But it can't recover it.

Great. YEARS of work, GONE!!! I am so angry, ticked, upset, and depressed right now. And that's an understatement.

I have a few suggestions for future features that will help prevent this. But I am stepping away from the computer now for safety reasons.


John Fleming
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Family Tree?? Try Family Shrub.
Posted Tuesday, November 15, 2011 - Post #29417
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Do you have no backup, familytrees output? w00t
Posted Tuesday, November 15, 2011 - Post #29418
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GenoPro version: 3.1.0.1

Last Login: Friday, January 27, 2023
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Feel free to send me your .gno file and I will do my best to recover it.  In my experience, corrupted files are not recoverable.  The most frequent data corruption occurs when people save their data on remove storage, such as floppy disks, USB memory stick or a flash card.

Data corruption also occurs on other types of files, such as Word Documents, Excel Spreadsheets and MP3s.

Edited: Tuesday, November 15, 2011 by GenoProSupport
Posted Tuesday, November 15, 2011 - Post #29424
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powery (15-Nov-2011)
Do you have no backup, familytrees output? w00t


Nope, not really. The last update to the printed version was some time ago (4 years or more). And I don't generate a report very often, as I am usually the one viewing it. In that case, I just use GenoPro, and fiddle with things. I only print out sections to show the relevant family member. My bad for sure. Blush

I do have a .gno file from January this year. When I upgraded to GenoPro 2011, I saved the file with a new name in the new format. Just in case I didn't like 2011, I could easily switch back. So, I do have that, so not ALL is lost. But this summer, I was very lucky in finding some great info, with a lot of typing to enter it. Crazy So now, looks like I'll have to find it all again, and go from there. Very very frustrating.


So, the feature I would like most to be in the next version, is the option of setting up an auto-backup-file-on-save system. You can set it so it rotates throw a set number of versions, say from 1 to 10. That way, if anything happens during the save cycle, the lost will only be from your last save. Still sucks, but not this big of a suck.

Anyway... GenoProSupport, check your in basket. Email sent. Thank you for at least looking at it.


John Fleming
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Family Tree?? Try Family Shrub.
Posted Wednesday, November 16, 2011 - Post #29430
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GenoPro version: 3.1.0.1

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I received an email from you, however no attachment.  Can you send it to service at genopro dot com.

By the way, you can go back from GenoPro 2011 to earlier versions of GenoPro without problem.
Posted Wednesday, November 16, 2011 - Post #29431
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I received your file.  Somehow the file got truncated, and the end of the file is missing.  I tried to rename the .gno to .zip and I get the error from Windows XP or WinRAR that the end of the file is missing.

What is strange is the end of the compressed archive Data.xml contains 8536 zeroes.  Those zeroes should be something else, a sequence of bytes describing the end of the compressed data.  I have no idea how the file ended up with such bytes.

Copying files from a hard disk to a memory stick or removable storage often produces such result, there the end of the file is missing when the media is removed.  I experienced this over the years, including copying MP3s on a USB memory stick.
Posted Wednesday, November 16, 2011 - Post #29432
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Well, there you go. The data is toast. I am very very very disappointed. Not in GenoPro, just in the loss. The file was saved to a non-removable hard drive, and was not being transferred between drives. Something interrupted the save cycle I guess. As to what...

I guess I'll just shove all this crap to the side, and work on something else. I don't feel like trying to find and enter all that data again right now. It will just remind me of all the effort I have lost. SUCKS!!!!!Angry


GenoPro developers:

Auto-backup-on-save.
Auto-backup-on-save.
Auto-backup-on-save.
Auto-backup-on-save.
Auto-backup-on-save.
Auto-backup-on-save.
Auto-backup-on-save.
Auto-backup-on-save.
Auto-backup-on-save.
Auto-backup-on-save.


John Fleming
------------------------------------------------------------------------
Family Tree?? Try Family Shrub.
Posted Wednesday, November 16, 2011 - Post #29433
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GenoPro version: 3.1.0.1

Last Login: Friday, January 27, 2023
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Can you try the Find File dialog (it is on GenoPro 2011) which will search for all .gno files on all your drives.  GenoPro uses a temporary file when saving to disk, and once the save is successful, it deletes the original file, and renames the temporary file to the original .gno file.  This precaution is in case something bad happens while saving (example: a power failure) which would result in half a file saved.

It is possible there is a temporary .gno file left on your computer.


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