Project not imported properly from Unity 4 to Unity 5

Hey, so I've been making this small game with Unity 4 and I imported that project to Unity 5 today. I use some 3rd party components from the asset store: Colorful, TvFilters and UCLAGameLab wireframe shader. None of these seem to be working at all although I think I imported them. I tried importing the files again from asset store, but it did not work.

The assets are not showing up in the components menu, either. All of my own C# scripts say "The associated script can not be loaded" as well. What should I do to fix this?