WoWInterface - Using ToggleGuildFrame() inside an addon

I have a guild related addon, and for some reason, ToggleGuildFrame() doesn't do anything when executed inside of it, but if I execute ToggleGuildFrame() via a macro, it opens up the social tab (albeit on Groups tab rather than the guild tab, not sure how to tell it which subtab to pick).

In any case, I've got print statements in the code, and can confirm it gets to the code to execute ToggleGuildFrame, but nothing happens. Any idea on how I can get this to work?

Code:

function TitanPanelGuildButton_OnClick(self, button)

        -- open the guild pane on a left click

        print("Got a click");

        if ( button == "LeftButton" and not IsControlKeyDown()) then

            print("button is left button");

                if (not FriendsFrame:IsVisible()) then

                    print("Toggling guild frame");

                    ToggleGuildFrame();

                    print("Friends Frame update");

                    --ToggleFriendsFrame(TITAN_GUILD_TAB_NUMBER);

                    FriendsFrame_Update();

                elseif (FriendsFrame:IsVisible()) then

                        ToggleGuildFrame();

                        --ToggleFriendsFrame(TITAN_GUILD_TAB_NUMBER);

                end

        elseif ( button == "LeftButton" and IsControlKeyDown()) then

                -- forcing an update, since auto-update might be off

                FriendsFrame:UnregisterEvent("GUILD_ROSTER_UPDATE");

                if (IsInGuild()) then

                        GuildRoster();

                end

                FriendsFrame:RegisterEvent("GUILD_ROSTER_UPDATE");

                TitanPanelGuildButton_ListInitMaster();

        end

        

        GUILD_THIS = self;

end

Thanks!