I'm having an issue with my guitar and I was hoping that someone would be able to help.
today I was playing my guitar, an Epiphone Dot, and at the 12th fret on the 4th and 5th strings the string is resting on the next fret up and buzzing horribly. I'm not sure how this has come about as I used the guitar at a gig yesterday and it was perfectly fine then. I set it up not long ago too and it's been perfect 'til now. When I'm not playing I hang it on my wall.

I'm really not sure how this has happened and what the best thing to do is. I'm thinking truss rod adjustment, but I'm not 100%.

Any thoughts?

Thanks in advance
"Music snobbery is the worst kind of snobbery. 'Oh, you like those noises? Those sounds in your ear? Do you like them? They're the wrong sounds. You should like these sounds in your ear.'"
- Dara O'Briain
sounds like a truss rod to me. thats what was wrong with my fender and i had the same problem, only on diffrent frets. do you know how to fix it?