Bug in filing NC taxes. Blank screen. Renbooted computer 2x, cleared cache, history, cookies. Tried 2 computers and 2 browsers. Get blank screen. What to do????

Bug in filing NC taxes. Blank screen. Renbooted computer 2x, cleared cache, history, cookies. Tried 2 computers and 2 browsers. Get blank screen. What to do??? xxxxxxxx@xxxxx.xxx