Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Game Development Object-Oriented Programming in Unity Inheritance The MonoBehaviour Class

Glen Hayes
Glen Hayes
5,798 Points

object oriented unity, unity instance error

After downloading and unzipping the course files, I try to open the scene in unity but it always crashes my graphic driver and then I get the error " another instance of unity is already open with this file..." even though it most definitely is not.....???? I didnt have this drama with the last course that uses the arrow game. Could have something to do with the older version of unity that treehouse uses and trying to open it with the latest version?

Seth Kroger
Seth Kroger
56,413 Points

Have you tried rebooting?