What are some suggestions for installing 4.x or 5.x under Mac OS 8/9?
As with any software, I recommend disabling extensions before installing (restart and hold down the Shift key) and rebuilding your desktop after installing (use TechTool or restart while holding down the Command and Option keys). I also HIGHLY recommend backing up your Settings, Filters, and Nicknames files before installing. Backing up your mailboxes would not be a bad idea, either. For best results, move your Eudora Settings file AND YOUR PLUG-INS out of your Eudora folder entirely and start with new settings when you first run Eudora 4.x. Move your Plug-ins back in one at a time to insure that they still work with the new version of Eudora. NOTE: If you are experiencing a lot of crashes with Eudora 4.x, I would suggest creating a new Eudora Settings file from scratch.