Netscape.cfg/AutoConfig failed. Please contact your system administrator.
Error: pref failed: [Exception... "Component returned failure code: 0x8000ffff (NS_ERROR_UNEXPECTED) [nsIPrefBranch.setStringPref]" nsresult: "0x8000ffff (NS_ERROR_UNEXPECTED)" location: "JS frame :: prefcalls.js :: pref :: line 33" data: no
Mostly just annoying, respond to this message Firefox then loads and behaves normally.
Thought others had run into this and knew what to do.