Was probably patched or never was finished if it is not currently working. Though the quest should start you on the quest and the guest should give you the guest though I am not sure if the guest is based on ID or Name
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Those two are implimented if u know the swf for the quests as for the guest box just type in a guest swf for example guest-Loco.swf and then it should spawn that guest character. If it didnt load the guest then you should be stuck on the loading screen.