I’m using the same version for Mint 9, and it is working just fine.
What is it doing to not allow you to save? Can you pull down the bookmark menu?
Does it allow you to bookmark but doesn’t actually save it?
The panel that allows you to select the folder you want to save it in never shows up and the bookmark is just thrown away...never shows up in the bookmark list at all....
Looking thru the Mint Forum for anything but so far have found nothing there.