What steps will reproduce the problem?
1. Log on

What is the expected output? What do you see instead?
Expected: no problems. Instead: error is thrown right at logon and it repeats 4 times immediately.

What version of the product are you using?
r169

Do you have an error log of what happened?
["message"] = "Interface\\FrameXML\\UIPanelTemplates.lua:246 attempt to index local 'frame' (a nil value):\nBetterQuest-r165\\modules\\blizzard\\blizzard.lua:50 in function <...ace\\AddOns\\BetterQuest\\modules\\blizzard\\blizzard.lua:49\n(tail call): ?:\n<in C code>: in function `QuestLog_Update'\nInterface\\FrameXML\\QuestLogFrame.lua:262 in function <Interface\\FrameXML\\QuestLogFrame.lua:259\n\n  ---",
            ["type"] = "error",
            ["time"] = "2009/08/10 13:51:34",
            ["session"] = 1187,
            ["counter"] = 4

Please provide any additional information below.
USEnglish client/server, WoW 3.2.0 live.