Title.
I just spent about 5 minutes mashing tab trying to enter edit mode. (Which was preceded by attempting to use the WASD keys to move the view port in Blender)
Delete everything…
Think I deleted the cache folder once. Of course that ****** my scene, wasted a whole bunch of prefabs etc. Taught me a lesson though. Dont make/use complex prefabs.
It would have to be either a while loop crash or the fact that I didn’t when I first started know that Unity uses blackface culling shaders by default. I opened one of my very early projects this past summer and found the hierarchy littered with planes.
I never really do anything dumb because I’m awesome, but I guess I frequently try to move things in the scene view when I’m actually in the game view, but I blame that on Unity’s UI.
Moved scripts to a new folder…
The other day I wrote a script that checked to see if a variable called animation was null, the problem was that I misspelled it. Instead of calling it “animation” I typed “animaton”. Normally, unity would throw an error saying variable is undefined, however, when you create a script it comes with a global variable that has the same name; so every time the animation was null… 6 hours of lost work because I was missing an “i” x_x
The standard checklist should be:
-Check most recently modified/created code.
-Check spelling.
-Check syntax.
-Check that script is properly attached and any transforms that need to be attached to script are attached.
-Make sure script is updated on the object, might have to refresh it.
-Then put a print command under the first condition and test it all the way down to last condition.
I miss anything?
I’m gonna say, the dumbest thing UNITY has done to me, was delete my entire scene. I had been working on this map for a long time. I pressed save, it had an error, and my scene file disappeared into thin air. 
I continuously try to use Blender commands in Unity.
Making a boat load of changes while the game was it play mode meaning, all the tweaks and changes were for nothing.
Once show my friends a game i made. They didn’t even tried it and said it was boring. Out of rage i made a dickslapping game.
Not saving my scene after making tons of changes then importing an asset and getting the dreaded import asset crash and losing everything.
Spent more than six hours making a intricate scene… THE GAME WAS PLAYING
I tried to divide by 0… I had to buy a new computer after that…
kidding aside xD
There are many dumb things i’ve done like:
- Changing terrain detail when i didn’t know it would reset everything in the terrain,
- Changing alot of things while the editor was playing, and then losing everything that was changed,
- Working on a scene for hours without saving, and Unity crashed, losing everything,
- Making infinite loops accidentally.
Dumbest thing that anyone’s done: Sat down and thought “I know, I’m going to make the world’s best MMORPG”.
They really should make this a toggle preference, or just buy that Persistent Save plugin and include it so folks don’t do this and go postal.
Right there with ya…
Dumbest thing I’ve done with Unity: uninstall it.
Oh, man, that’s rough.