Corrupted gho-file, gho-explorer damaged it. Help!

My name is Fredrick Johansson, I live in sweden and study computer science and make extra money on repairing and upgrading computers, and other related things.

 

Last week I was going to do a backup-file for a customer, before upgrading from windows xp to seven, First I put everything valuable in a folder on the desktop, then tried to copy it onto a usb-memory. It failed over and over, crc-error... I contacted the customer and she said that the only really important files was her documents, not her photos, which i 75% of the backup. The computer is her office computer, she has no backups of anything.

 

Well, then I remebered that I had been playing with norton ghost a few years back and have only had good experiences of it. So I used ghost to make an image-file of the hdd, since it usually ignores crc-errors.

 

Everything finished successfully and the image was put on the usb--memory. The pc's 500Gb hdd(only used 80gb) was then formatted, I installed os, apps and changed some settings. 

 

Then I used ghost explorer, which have always worked before, to extract her files and folders to the newly installed computer. I got a few folders. Then I closed the windows and turned off the computer. 

 

A few hours later(I ate/made dinner), I booted up and continued extracting folders and files. I closed ghost explorer again(don't remember why), then opened it up again, selected the gho-file, started to extract a folder. And in windows, if a program is working hard, and you click on the window, the program may hang-up. It did, my mistake. I re-opened the program, and selected the file and ghost explorer says that it is corrupt. Is this fixable? I feel really bad about destroying my customers work. :(

 

..Oh, I almost missed to add that my ghost version is 11.5 and that when making the image, I used "fast compression".