Exterior Lights

Anyone with any idea why the exterior lights behave oddly after closing a flight down and restarting with an earlier auto-saved flight state of the very same flight ? Could get the Landing and Taxi lights to come on at take-off but could not get the Position strobe, the Logo, the Anti-Collision,or the Wing lights to switch on at all yet the Runway turn-off lights remained constantly on,unable to switch off. All this post-Hotfix #3. Thanks.