Rpainter

my tst has all the programs but last night at the track I plugged in the rail pressure plug from the tst( I usually dont run it due to surging) so I could adjust the rail pressure before I hooked to the sled but when I got to the screen to adjust the rail option from 0 to 9 the screen froze and would not allow me to adjust it? but everything else works fine???? does anyone have any ideas on what to look at to see if I can fix it before I call Mark tomorrow??? Rob