Unable to find GUIStyle? Random...?

[Heu]

So recently this has been happening to my editor… I usually work in the editor for about an hour and this suddenly happens. Unity Editor just sorta flips out saying GUISkins have gone missing and styles aren’t there anymore and everything just goes crazy on my editor!

This is fixed by saving and leaving unity and going back in until another hour has passed until this happens again.

What is going on?
If this matters i’m using
2DToolkit, 2DVolumetricLights, RAIN{Indie}, downloaded…

http://imageshack.us/a/img571/4999/whatjusthappened.png

[Heu]

So apparently the image never showed and is still not showing… Well at least on my screen it’s not showing.

I posted a link. You can copy it and paste it in like paint to zoom in if you need too.
I’m not crazy!