Bug Scripts don't work

I change the name of a class in a script to something that isn't the name and now every script is apparently invalid.

 

For MonoBehaviours, the script filename does need to match the class name.

That wouldn't make "every script" invalid, it would just prevent you from attaching the misnamed script to an object. So there's most likely something else wrong.

Copy and paste the actual error message. Paraphrased error messages are utterly useless in diagnosing a problem.

 

This is what shows with the script I changed:

 

And this with every other attached script of which I didn't change:

 

You have compile errors. Check your console (open it by clicking on the bottom bar of the Unity window)

 

How can I fix this?

 

The things I've already said:

We don't have enough information to help you yet.

 

Ohhhhhh you mean ones like this:

 

Yes, that's the one.

Most of the time this error means you have two copies of a script file in your project somewhere. Look for other scripts containing a class of the same name.

If you can rule this out, I have occasionally seen a Unity bug when renaming a script file where it thinks the old script file still exists and sees them as duplicates. If that's the problem, restarting Unity will probably fix it. If it doesn't, then deleting the Library folder probably will (MAKE A BACKUP of your project before deleting that)

 

I just realised that for some reason all my scripts duplicated

 

This was the problem - thanks!