NPCs won't respond to hails

[TheFishyOne]

I have a level 4 Human Monk based in Freeport, and no NPCs will respond to his hails. Even the NPCs in The Monk guildhall won't talk to him, and I had to resort to using the wiki just to figure out how to get my white sash. I see other people hail NPCs and get responses, which suggests that my experience is not normal. Is there an option or something else I have to toggle to interact with NPCs?

Also, I don't know if this is relevant, but I used Duxa's installer to configure Titanium for p1999 after installing Titanium. Any insight into this would be much appreciated.