I have just entered the solid foods stage of my plan, and have had zero problems to this point, excluding the fact that my band is not full enough to feel much restriction yet. I ate a large handful of nuts about a week ago, and am still having problems with that (I guess). Everytime I eat, I get very gassy.The gas passes well, but it is fairly painful to experience. Has anyone had this problem? I am wondering if it would help to go back to liquids for a bit.

No, I would keep going with solids. You've got to get back to eating solids sooner or later. Gas is unfortunately part of the whole process but it will pass (excuse the pun). Are you taking fiber? Just asking because I was told to take it and it gave me extremely painful gas. I was told to stop taking it. Even without the fiber I still had the gas pains for a couple weeks. Be sure take GasX, I doubled up on the dosage twice a day and give it time. And try to move as much as possible both cardio and stretching and bending.