Lost all bookmarks on installing FF 4.
A second problem arose on installing FF 4: I lost all my bookmarks, but not my settings. Previous version was (I think) 3.0.17 . I had to uninstall earlier version because when FF4 was loaded it could not be launched.
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A third, related problem on installing FF4: the bookmark star in the Address Bar is inoperative. So I cannot repopulate my lost Bookmarks from websites. This is dreadful. FF4 was forced upon me because all the Mozilla sites offered only FF4 as an upgrade. I wanted 3.0.19 but couldn't find it anywhere. Yet the software indicated that 3.0.19 was the next available upgrade for me. Can I roll back to an earlier version than FF4? Will I need to uninstall FF4 first?
A possible cause is a problem with the file places.sqlite that stores the bookmarks and the history.
Thank you Cor-el for a timely reply. The link you sent was a goldmine of information about Missing Bookmarks for various reasons. After much reading I was able quite simply to restore all my (hundreds of) bookmarks from the Library window's Import & Backup tool. By opening the bookmark backup folder in my Profile folder first I was able to read the date of each backup file and its size. It was clear from this which file was the biggest. So that was the one I used to Restore. It was done in two seconds. Thank you for putting me on the right track. Keep up the good work. It's appreciated more than you know.