I updated when prompted to do so - from 68.12.1 to 78.9.0 on a Mac OS X 10.10.5. The new version opens, but does not load any information. I can see the accounts and folders, but get the spinning ball until I have to force quit. I've tried re-booting several times. Same thing happened in safe boot. I've downloaded both 68.12.1 and 78.9.1 - but they both want me to set up a new profile. I can read my mail on other sources, but really need to access important mail that was saved in the previous version. Also - I can not upgrade my OS - I use a few old apps for work. I would appreciate any suggestions - I am fairly technically challenged Thanks!