Photoshop Holding Shift Problem.

In photoshop I used to be able to click with a brush and then hold shift and click another point and it would make a line. For some reason nothing happends anymore when I hold shift.

Someone please help me.

 

Don't you hold it down and drag?

 

Nope, you don't have to, it's instantly a straight line if you hold press once, press twice.

Maybe, your shift is screwed up..?

 

Yeah, mabye you had sticky shift? No idea, try restarting comp/photoshop.

 

I restarted my comp and photoshop and it didn't fix it.

Is there any way in photoshop to reset default controls??