Well, recently all my prints in-game have been all black. And this only starts when i begin taking pictures with the steam button F12.. Because i normamly take 2 - 5 prints, just to make sure who won the knife round, and who won the CT side so as the T side.
I think its from this.. It's the only reason i can find..
If not, tell me what i should do, please.

If your Libra3 screenshots are black, I'm pretty sure its a common problem most people get but its usually fine

 kn1wn
Its a known issue with Libra and is currently being looked in to.

Can you post your OS + System specs please?

Windows 7,

Intel Core I5 2400 @ 3.6 ghz
Asus P8P67 Pro
GSkill Ripjaws X 1600 mhz 2 x 2 Gb
XFX 6870

Well, is there a problem that i keep playing and i keep getting 70% black screens? Like.. Can i keep playing?

 kn1wn
You should be fine for the moment so feel free to keep playing. It's a known issue with Libra and hopefully it will be patched soon.

 paradox
has been very busy recently but hopefully we'll see the problem resolved in the coming weeks.

Well, looks like my problem is solved :) Idk why but i didnt had black prints in the last 2 wars. Thanks.
Now i have another problem, wich i had since the beggining. Like, from 5 to 5 minutes i have a ''break'' like my game freezes 1 second.. Sometimes it freezes in some fuc*ed situations. Like front to front.