Soon as you log in on 2.4.3 client u get error.
http://imgur.com/VxO2fsL

Change this (line 466):

local tbsize = table.getn(MBB_Exclude)

to this:

local tbsize = #MBB_Exclude

And you should be good. This post might help with some other errors encountered when I converted the code from Vanilla to BC: http://wowwiki.wikia.com/wiki/Patch_2.0.1/API_changes. I'm sure I might have missed a few more changes.

I edited \Modules\QuestieNotes.lua, just like suggested and i get new error.
http://imgur.com/U5k3D8S
466: Attempt to get length of global 'MBB_Exclude' (a nil value)

Ahhh... makes sense now. You're not using MiniMapButtonBag.

Change this:

    local MBB_ExcludeTemp = {}
    local count = CREATED_NOTE_FRAMES
    local tbsize = table.getn(MBB_Exclude)
    if tbsize == 0 then
        MBB_Exclude[1] = "QuestiePlaceHolderFrame";
    end
    if IsAddOnLoaded("MBB") then
        if tbsize >= count + 1 then return end
        for i = 1, count do
            MBB_ExcludeTemp[i] = "QuestieNoteFrame"..i;
        end
        for i = 1, #MBB_ExcludeTemp do
            MBB_Exclude[#MBB_Exclude+1] = MBB_ExcludeTemp[i]
        end
        MBB_ExcludeTemp = {}
    end
end

To this:

    if IsAddOnLoaded("MBB") then        
        local MBB_ExcludeTemp = {}
        local count = CREATED_NOTE_FRAMES
        local tbsize = table.getn(MBB_Exclude)
        if tbsize == 0 then
            MBB_Exclude[1] = "QuestiePlaceHolderFrame";
        end
        if tbsize >= count + 1 then return end
        for i = 1, count do
            MBB_ExcludeTemp[i] = "QuestieNoteFrame"..i;
        end
        for i = 1, #MBB_ExcludeTemp do
            MBB_Exclude[#MBB_Exclude+1] = MBB_ExcludeTemp[i]
        end
        MBB_ExcludeTemp = {}
    end
end

That should bypass that whole block of code if you're not running that addon. I use that addon all the time and ported a version to Vanilla. The BC version was causing some map note issues...

Yep, seems to be working.
Also I'm getting error lines of: "QuestieQuest: Error! This doesn't Appear to be a valid quest or it's missing from the database. Please report on Github."
http://imgur.com/g4jDNUg

It seems to be tracking only one quest, rest get error: "QuestieQuest: Error! This doesn't Appear to be a valid quest or it's missing from the database. Please report on Github."
Quests:
http://imgur.com/dN9pGti

If I can provide any other helpful information let me know.

Edit:
With all disabled addons, same error, only thing that improved, that it tracks quests name in quest tracker, but doesn't show were to gather objectives on map or mini-map.

As the readme states for that build. The DB is incomplete. All the BC quests aren't present.