Shaders not working

I tried to apply shader effect and it shows me just black screen, why?
I'm doing everything as was shown in stencylpedia, applying contrast shader.
Build 8059

What OS are you building for?

Shaders don't work well (if at all) outside of desktop.

I tried it on desktop.

I'm not too sure that osx works as I remember reading reports about people struggling it at some point. Are you using it? (I may be completely wrong and be thinking of something else, if I am tell me)

I'm on windows 7 x64.
Tried all shaders, always just black screen...

That's odd.  What graphics card?

yes, it is strange...

My video card is internal "Mobile Intel 4 series"

You should try out the latest builds. Reports are that the upgrades fixed up shaders for some people for which it was previously broken.

I saw red text with warnings that last builds can be not stable because of migrating to the new openfl version.
is it save to use new builds? I want to finish my gamein this month.

Yes, the upgrade issues have been resolved. The latest build should be working fine now.

i'm using latest version and still shaders are not working
i am working mac mini