In lecture 38 I upgraded to Unity 5 and never went back to 4 but in lecture 89 it became impossible to continue in Unity 5 then I tried to open my project in Unity 4 and revert it but it deleted all my assets and scripts. Now I’m just watching the lectures with a blank project until the end of the section.
Bummer 
I don’t remind what’s in this lecture but I’ve used 5 all the course without any problems.
You can use github to get sources for taking the project if you want something to work along the course
Hi Veronica,
If you go to the lecture which you lost your work on and click the three bars in the top left there should be a list of lectures.
If you go to the lecture and click the link to the lecture changes this will take you to the github page where you can download the zip file of the project at the end of that particular lecture.
You wont get back any custom work you have done but you will have a project that you can open in unity 4 and continue with the course with a working project.
Hope this helps.
I need to learn to type faster lol nice job and thanks!
the part that was throwing a compile error was the audio.Play (); line… it said UnityEngine.Component does not contain a definition for Play. I searched around for an update to this code but couldn’t get anything to work in unity 5.6.3p2 so I tried to open it in unity 4 which made things worse. Thanks for the suggestions for how to rebuild my project.