EDINBURG — A snowmobiler from Montgomery County died of injuries suffered in a snowmobile crash late Saturday night on the Great Sacandaga Lake, Saratoga County Sheriff's officials said.Officials identified the snowmobiler as 20-year-old Garrett McIntosh of the town of Florida.  Authorities responded to the crash at 11:35 p.m. near Lunker Lane in Edinburg. The town's fire department and EMS squad, as well as the Northville Fire Department, joined the Sheriff's department on the scene. "I can tell you in general terms that there's a couple of people who have been snowmobiling on the ice and had fallen back a little ways," said Sheriff's department…