I have reloaded Windows 10 into my Lenovo T510 as a result of changing the hard drive. I had saved my Thunderbird profile. I completed this last Friday. Thunderbird will not allow me to download its software as my machine is now not compatible which I am struggling with as I was using Thunderbird all last week (See attachment). As a sneeky fix....I took a older version from my wife's machine loaded that...all good. I assumed in time it would update after I had loaded my profile. When I try and change my default profile to the migrated one in the software I see the message attached. I seem to be caught in a vicious circle as my Lap top is nolonger compatible with the Thunderbaird software available for download, though I have only changed the harddrive. If I use an older version of Thunderbird which is working fine on my wife's Lenovo T510 (identical machines) I have a compatibility with the profile I want to use. I also attach my lap top operating system and architecture(?) Can anyone help? In normal circumstances I would just start again but the profile has some very important emails relating to a personal legal case I am fighting (and winning) and I need access to them.