Third Eye Blind brought their post-grunge sound to SUNY Plattsburgh in the spring of 2003, when the band was navigating the music industry changes that had upended their post-“Semi-Charmed Life” trajectory. College campuses had become the band’s natural habitat, where students who’d grown up with “Jumper” and “How’s It Going to Be” packed the hall. The North Country rarely got shows of this caliber.