Check the Properties of that file and make sure that it is a JSON file (file extension.json) and not any other type.

See also http://kb.mozillazine.org/Unable_to_process_the_backup_file_-_Firefox

Hello Dear Core-el,

but please without that kind of advices, i appreciate all kind of helps, but i'm not totally noob, i'm in IT 10 years, and i work in IT, and normally that's .JSON file type, 200% !

I checked that link sure before posting question here... Please if here is some of firefox's experts help with this big problem !?

I'm lost now without all my bookmarks :( !

Thanks!

Greetings!

p.s. i solved this, with restoring .json backup file on another machine (my desktop machine), and after that i exported bookmarks like bookmarks.html file, that helped me to import bookmarks in my notebook. This can help to other people with this problem, i found this solution by myself, but you can publish this in your KB for this kind of problem, I imported .json file to older version of FF on my desktop machine, where is 3.0.18 version, on my notebook is latest 3.6.8 version, and with this 3.6.8 version couldn't restore .json backup file, probably FF version before formatting OS on my notebook was 3.4.x.x ...

My mistake, i though that problem is solved, but isn't, cause that .json file on desktop machine was from desktop's machine, i can't import yet .json backup file on my notebook XP SP3, with 3.6.8 firefox version, backup .json file, which is backuped before reinstalling OS?

Please some suggestions?

Bellw ss from trying importing backup .json file on my reinstalled os with firefox 3.6.8.

I tried with creating new profile through firefox.exe -Profilemanager , i created new - empty profile, but nothing new, same thing...

What a support from firefox, i can't believe 5 days, and no response from some support team !??

if you have the back up file, open it in a text editor and sort it by HTTP this should help if desperate.

Can you restore that JSON backup in a new profile?

Did you make sure that it is really a JSON backup and that there is no missing or hidden other file extension?
A JSON backup starts with: {"title":"","id":1,"dateAdded"
A HTML backup starts with: <!DOCTYPE NETSCAPE-Bookmark-file-1>

You can try if you can restore that JSON backup in a new profile.

Create a new profile as a test to check if your current profile is causing the problems

See Basic Troubleshooting: Make a new profile

If that new profile works then you can transfer some files from the old profile to that new profile (be careful not to copy corrupted files)
See http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Thank you, i knew that, but that's not solution really, cause i had on 100-s pages bookmarked, and so many password for that pages :( , i lost all my passwords :( , that's really dificult to sort on 100-s pages with text editor :( ...

Anyway thanks for your suggestion!

" Can you restore that JSON backup in a new profile?

Did you make sure that it is really a JSON backup and that there is no missing or hidden other file extension? A JSON backup starts with: {"title":"","id":1,"dateAdded" A HTML backup starts with:

You can try if you can restore that JSON backup in a new profile.

Create a new profile as a test to check if your current profile is causing the problems

See Basic Troubleshooting: Make a new profile

If that new profile works then you can transfer some files from the old profile to that new profile (be careful not to copy corrupted files) See http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox "

Please for administration of this support site, make possibility to quote someone's answer, on this way is dificult to answer somebody who wrote some suggestion!

No, i can't restore JSON backup in new profile, even on fresh installed OS XP SP3, with fresh installation of latest version of firefox!

MAN I TOLD YOU 10X IT'S 200 % JSON BACKUP FILE!!! I'M NOT IN IT FROM YESTERDAY, I WORK IN IT 12 YEARS!!!

I tried restoring json backup in new profile, but nothing, i couldn't restore, cause that stupid error from screen shot which i posted again appears !

Man i'm not totally noob i repeat 2nd time here, and normally that i know to create new profile, and that i tried that, but that didn't help!

I can't believe that FIREFOX has not good support team, and doesn't care for yours users, this will not give me more reason to use in future firefox like borwser, if i don't have good support, and when i have problem like this, to loose all my very important bookmarks and passwords on them, and firefox support won't to help me to solve my problem!

If somebody from firefox support team read this, i can give you Remote desktop access to my computer to try solve this problem, like other serious company like HP, Dell , etc. give remote desktop support to their users!

Corel are you from firefox support team? Please don't write same suggestions, cause i know to read, and i understand well if you write once some suggestion!

Greetzz

This is my .json file

bookmarks-2010-06-27.json

and normally it starts with

{"title":"","id":1, "dateAdded"

cause this is .json backup file! When i opened it with txt editor like notepad, inside i can see all my bookmarked pages, i need to restore this backup in my reinstalled OS XP SP3 on new installed firefox latest version.