Yes, do not manually quest. you may not be the level requirement, or you may have not completed a pre-req, but completed something else that has been piggy-backed off of the pre-req or something
delete that character's settings file and try again if that is still an issue, does your toon have a weird character in his name? If so, please let the devs know what character(s) you have in your name (don't type your whole name out of course)
load the horde profile [11:34:26.745 D] [UserDialog-v1728(debug)] [Attention Required..., user response] You must be Alliance to run this profile! [11:16:09.011 D] Loading profile from store:///1-100 Questing Profile Pack/WoD/[A - Quest] 96-98 Arak [Kick].xml [11:13:01.410 N] Character is a level 96 Orc DeathKnight Now ... i assume you originally loaded the horde profile, and here is your issue: [11:15:41.557 D] [QDBG] Starting behavior [ForcedQuestPickUp QuestId: 35537, QuestName: News from Spires of Arak]. I have fixed this issue.
thoroughly read the first page of posts from me. Hint: use svn and delete all the lines before your current quest chain
[07:41:38.603 D] Goal: Picking Up Quest - Imbeciles Abound! (Imbeciles Abound! - Quest - World of Warcraft) : From - Doctor Sintar Malefious (Doctor Sintar Malefious - NPC - World of Warcraft) i dunno. level up and push start. it should go to next zone