Ok then looks like I'm talking to my self.!! . . .So I'll answer my own question . Lol . . . YES It IS.

Handywood man If I'm seeing correct then this is definitely your problem. The Step pulse and direction pulse are trying to use the same pin from PC and it will do what you say.

Just Swap the white jumper wire so it goes from (pul -) to (Dir-) and see if it works then.? Think you'll find it does.