Can't access Turtle Island

[Lefire]

??Tried it. Doesn't help. I've replicated the issue on a local test server, too. As expected, the character data has MISC_QUEST bit 17 set and no sign of the TURTLE variable.
??The exact problem is that once you've found the buried treasure on the island (by reading the journal in Alberta to get the coordinates and using the skull key), the option to sail to Turtle Island is just gone. It's poor scripting on eAthena's part, unless you're not supposed to be able to get back after finding the treasure, and that seems unlikely since there's no mention of any such thing anywhere.
??Specifically, if they're going to toss it in the MISC_QUEST variable once the quest is done instead of keeping TURTLE, Gotanblue's script should start with "if ((MISC_QUEST & 65536) || TURTLE)" instead of "if (TURTLE)".

??EDIT: The moral of the story is to unlock the warp ASAP when you go. Then it doesn't matter what the official NPCs do.