Sketch tool not working

[Tyraell101]

Hey i downloaded a cracked version of Adobe Photoshop CS5 i believe and for some reason a week ago i was doing my effects and stuff and sketch was workiing perfectly but now when i try using my glow effects i cant sketch clouds can some1 tell me how to fix this?
If this is the wrong category i am sorry

[Paradox]

Dont get cracked v's of programs. Just dw the trial and use a keygen.