All I see when open SFM is a gray background. Help please!

[[Symmetry]]

It used to work good when I first opened the program. It was a year ago. All the windows and stuff were on their place. Today I opened it again and nothing can be seen only a big gray background. I checked the "windows" and I'm able to restore the the smaller windows like primary wievpoint one by one, but don't want to make it again and again once I open SFM.
Now it looks like this:
http://www.kepfeltoltes.hu/view/130715/79313030sfmfail_www.kepfeltoltes.hu_.jpg
I would appreciate your help.

[Pte Jack]

Just pull the tabs onto the Gray back ground. You'll see 5 or six little white boxes, tey represent the window area the tab will go. Drop the tab on one of the boxes

Like this

http://imgur.com/Mcsj8xf

This is also how you make custom layouts like this

http://imgur.com/N5aaVaF

You can also try clicking Windows > Layouts and return to default layout

[[Symmetry]]

Thanks for your quick answer. I couldn't really do what you showed me, but i found the solution.
Windows-Layouts-default that was the problem. I set it to "clip editing" not it works fine.