Dunno. Can you give more info? Does it give an error message, how long does is the time between it opening and closing? Since when has this started happening?

No more info needed - when you open it you see a black window either. It should NOT be closed if so then the editor will close either. If you open the editor first time you will need to open your custom WOG so the editor has a contact with your custom WOG and gootool.

I dont know what thee problem is I havent closed the black thingy and it is a new woogle and it started dismorning

Then we definitely do need more info. In this case you must show us a video cause nobody else of us never had such a problem like this.

how do I make a video

We're totally left in the dark. Please specify:
1. Your OS
2. When it closes (what is the last thing that comes up before it closes?)

nothing

Do you have the latest version of Python?

what is python
Level editor worked yesterday

What is Python? And cool that you're online but I will not be able to chat with you on chat cause I'll need to go on sec. By the way how old are you anyway? Well I'm 13 cause it's my birthday today! join in forum: http://goofans.com/forum/world-of-goo/general-discussion/3435

I`m 10. happy birthday!

Check if there is any .log file in the installation directory.

Information:
Started: dismoring
Load time: time,4
The last thing that came up before it closed: nothing
error messiges: 0
Other Information: this is not a new download it knows the wog directery
and if I cant opening it world of Goo: the west side will never be out

As Red said, please specify your operating system as well as the version of the editor you're using. Also please be more descriptive. There are two level editor windows, as wiki said. How long do each appear for, or does one or both of them not appear at all? Did you install any particular mod or do anything since the last you launched the editor? Where is the World of Goo directory that you're editing? Is it your original World of Goo, or is it the custom one GooTool creates? Have you tried running World of Goo in that same folder? Does it work? That kind of information is what people need in order to help out. At present, you're being very vague and we can't help you at all.

Try going to C:\Program Files (x86?)\WOG Corp\WooGLE\ and shift-right-click on the background. Select "Open Command Window Here". In the window that comes up, type "wogeditor". Hit Enter. Watch if anything appears. If that doesn't work, try adding "2>err.log 1>out.log" after the command.

none of this Works

Please tell us which operating system you're using, e.g. Windows 7, Windows XP, Mac OS X, Linux, etc...

I use Windows 7

You may have downloaded the wrong version for your PC. If you got Windows seven (I got the same) you must have to download windows version. If you are not sure then delete your woogle and install it again. If it still don't work then we can't help.

but it worked yesterday and I did get the right version

It may be some bug or a glitch. Just download it again cause I had a glitch with my Platforms of goo game and I deleted it and downloaded again.

It may help you either

x86 or x64? (Look in your C:\ drive, if there's a folder called "Program Files (x86)" you have an x64 system)

Have you tried turning it off and on again?

I love The IT Crowd. I hate the British shows that only have 6 episodes a season. :C

If I wont get level editor to work I cant ever make levels or complete my chapters

Things I have tried:
-Restarted the Computer
-Turn the Computer OFF and back ON again
-uninstalled the program and installed it again
-uninstalled WOG and installed it

and thats what ive done

Which version of the editor? RC3?

But if none of this works and it is illogical how it stopped there should be no problems at all. Tell me if your WOG works nicely and test all original levels cause may be you have accidently deleted one of original levels in your custom WOG folder at res/levels/[Whatever level name (Original)]

That would bring up an error message before crashing the editor, though.

no error messiges im rc3

I have to agree with Wiki that this is really strange.

Do you remember any major changes you've made to your PC in between the time it last worked and the time it stopped working? If so, what are they?