Hi everyone,
I'm a long-time player and devotee of this game. I've made hundreds of characters and beaten the game probably 2 dozen times, and I *always* do the sidequests. ;-) However, in my most recent play-through, I've encountered a bug with which I've had no previous experience: In Caladon's Whytechurch murders quest, I cannot get Vicent to appear in the sewers at the end of the street. I've spoken to the chief of police, investigated the murder scenes, found and equipped the Blade of Xerxes, and received permission to enter the sewers, past the two guards.
This is the first time I've tried using Drog's unofficial patch and the level50 cap patch. Could either of those be having an adverse effect on the game?
And just for the sake of interest, my character is a level 51 technologer, 100% positively aligned, Master of Melee, Dodge, Pickpocket, and Persuade. He has 6 followers: Virgil, Sogg, Waromon, Sebastian, Magnus, Torien Kel, and, of course, Dog.

**Spoilers**
Maybe check the step by step here -
See "Solve the Caladon Murders"
Or
See # 19

Thanks, but this did not solve my problem. I followed every step in the walkthrough, but Vincent would not appear. I eventually gave it up as a bad job. Here I am again, a year later, with a new character, and still no Vincent. A search of the interwebs yields no hits, other than my own original post. Can it be that I am the only person ever to encounter this problem?

I don't know if I've ever encountered that exactly (though I am thinking I might have actually, a long time ago), but occasionally I've have quests/characters not occur or appear when they should. I think there are just some outstanding bugs in the game that happen sometimes (randomly it seems).

I think what you did, keep playing (or restart/load from far back) is the only ways to fix that sort of problem.

I have never had that problem, running UAP, level cap remover (or extender, to be precise) and high res patch. I've seen some other "missing people" problems solved by disabling the high res patch, so - assuming you are running that - try disabling it before entering the sewers.

I hate to resurrect old topics, but I thought it'd be better to add new info to an old topic than try to build a new one.

I started this quest by talking to one of the two guards outside one of the two first murder scenes, who then told me to go speak to the Inspector. The inspector told me to talk to the woman in the back room of the police station, as well as investigate the two murder scenes. The woman told me about the guy who I'll ultimately have to hunt down, but the two guards still wouldn't let me in the murder scenes. I went back to the inspector, who just gave me the generic "Nice to see you" dialogue.

Upon investigating my quest log, I'd found that the damn thing hadn't even recorded properly, having bugged out in the most spectacular way. All it took was a simple reloading of a game taking place at a time before starting the quest, and the whole thing went smoothly.

I guess it was just one of those Troika things.