Alright so I took the castle back and now I can't talk to Preston every time I try he just says "hello" or "what do you need general" but the dialogue options don't come up

Is that a bad thing? The guy annoys me..made me pack up and move to red rocket

Check and make sure you don't have an active quest dealing with the castle...forget exactly how it goes but there's more to do after you take it over.

Okay. What did you do to piss Preston off? Are you an addict who killed Mama Murphy and goes around wantonly stealing, being selfish and just being a general jacka**?

That would explain it. Preston is such a goody goody.

Didn't do anything he likes me a lot I had the option to flirt with him and everything all he does is talk good about me

And I did everything for the castle quest

I think I read something in the guide yesterday about having to complete something at the Castle before he'll talk to you again. Sorry, I don't have it on me. Maybe you missed something?

Maybe you want to look at a walkthrough of that quest? I'm sure it's mentioned. I'll look as well.

Got this from reddit and I think it's what I read last night. Check the generators and be sure they're working.

https://www.reddit.com/r/fo4/comments/3sdvir/preston_garvey_bug/

apparently it's a known bug.

Alright I'll have a look thanks