Unusual console error for Unity 2?

I downloaded Unity 2.6.1 to follow along with BurgZerg Arcade’s Hack and Slash RPG tutorials. When the download finished and I opened Unity I found 2 errors in the console which I have never seen before. I have been using Unity 5 for the past year and the only time I downloaded Unity 2.6.1 otherwise was in summer of last year and then I went back to Unity 5. My errors are:

First error says: “Stacktrace:”

Second error says: “Internal compiler error. See the console log for more information.”

This is pretty urgent and I will appreciate any help! Thanks! I have also uploaded an image along with this btw.

Bumping this because 30 people have seen it but nobody is helping…

hm. Might try forcing it to run under OpenGL with the command line “-force-opengl”

Or you can go to a completed RPG Framework here: http://orkframework.com

How do I do this command line?

15 seconds in google returned this: Unity - Manual: Command-line arguments

It works for Mac right?