I'm sorry if this is an obvious question, but I'm only an occasional Opera user and I've searched without finding an answer ...

While using Opera recently, I was asked if I wanted to upgrade to the latest version. There wasn't much information, certainly no warnings, and without much thought, I clicked on 'yes.' Now I found out version 21 doesn't have bookmarks, and I NEED my old bookmarks. I also had a number of saved "Sessions," which are equally important. (This is a feature I found more useful than any chrome add-ons, and one of the reasons I use Opera)

I've tried searching for .adr files without luck (never had to do this before, so I'm not sure if that's a windows convention).

Please, any help is appreciated!!!!!

Thank you in advance!