I'm in the process of resuscitating an A4000 Rev D that is running OS 3.1 and has a Toaster (version 4.1). It's been a while since I've been doing Amiga things, so I need to catch up on a few matters. Will upgrading the operating system to 3.5, 3.9 or 4.0 cause trouble when I go to operate the Toaster? As working with the Toaster is my main objective, I don't want to mess anything up in that area. Thanks.
