fixed crash with slider out of range
fixed crash with slider out of range

TheProjecter/braingl,braingl/braingl,mhough/braingl,rdmenezes/fibernavigator2,mhough/braingl,TheProjecter/braingl,TheProjecter/braingl,braingl/braingl,mhough/braingl,braingl/braingl,rdmenezes/fibernavigator2