if the bike quit after running "fine" at the store, it sounds like a loose ground! Which can happen at any time, for no apparent reason. Check your Chassis ground from the battery, I have a feeling thats your culprit. Wait, did you say the bike cranks, but won't start? Check this answer...go with Candrew and Crash, sounds more like a bad switch, and that would make more sense. If the bike doesn't crank, then check the ground.

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2000 CBR929RR- Cams, Micron cf pipe and headers, Power commander 3 (custom mapped), heads, decked, ported, polished, zero gravity shield, Frame sliders, polished frame and swingarm, remote controlled red neons, Stainless Braided front and rear brake lines. RK 520 race chain and -1/0 Vortex sprockets, bitch pegs and rear seat removed, OEM rear seat cowl, Pirelli Diablo Rubber.