Finding the cause for a NullReferenceException

You get that when? Is your installation intact?

what do you mean?

we need more info about how you developed a program which provokes this error message within the default unity files- and what kind of code are you executing to get this error?

how you developed a program which provokes this error message

What do you mean?

what kind of code are you executing to get this error

a lot of code. As you see there are no line numbers in this error message.

What are the most recent things you did? New model asset imported? Changing meshes in-game/in-editor?

I've never seen or solved this myself, but it looks asset-related.

1. try to see if your unity installation hasn't gone corrupt. try to get a different project to run. your getting errors from default unity files, which shouldn't ever be producing errors, so my first guess would be that your monoconfiguration got messed up somehow.

2.try to isolate the part of code thats producing the problem. at what point in your production progress did the problem appear? try to return the code to a prior working state and see at which point it stops working.

did you write it yourself? your game? WTF is your game man! did you write any code, what does it do, what changes in your code made this error?

lol, we're slowly getting agitated, everyone really wants to find the nullreferenceexpection, and if the initial poster won't tell us we won't sleep well for days.

Asset-related sounds like a pretty good guess to me, like you calling some unityfunction to load a model but the model doesn't exist.

The problem Jens is that those error messages pertain to the Unity editor and don't provide us with any real information.

We need to know things like when this started happening, what was changed around that time and are there any other errors occurring in-game or in the editor.