Unity 5 skybox problems

hello i just upgraded my game from unity 4 to unit 5 and i have seen a lot of scripting problems and i have a skybox problem.The skybox was from unity 4.5.5 and now when it shows up on unity 5 it looks really bad i dont know how to fix this problem i will show you a pic on what it looks like please help if you have any ideas on how to fix this problem

The black you see in the skybox is actually alpha. Unity 4 showed the alpha as white, while Unity 5 shows it as black.

Find your skybox images in standard assets and there should be an option to “Fix Now”.