I was running MacOS Catalina 10.5.6 and upgraded to Sonoma 14.5. I know it was stupid to wait so long, but that's where I am. After many years of using Thunderbird, I stopped using Thunderbird for my email years ago because my old provider gave up the ghost, and I switched to gmail even though I loved Thunderbird. I still had many documents in Thunderbird which I didn't transfer to other applications or locations. Today, I finally gave up and did a massive update on my MacOS. Now Thunderbird won't run, and I desperately need many of the documents that I could only access through Thunderbird. When I went to the site for updating Thunderbird, the first thing I needed to know was what version I had, and the instructions assume you can access that info as you are running Thunderbird, which I can't do now. Please help! Thank you, Sara