Left mouse click doesn't shoot arrows

I have a level 40 ranger and just finished up a couple of quest in ACT 3 in default mode. Anyway my ranger cannot shot regular shot with her bow. Right click on poison arrow or middle button click on the mouse for explosive arrow works, but I can't shot a regular arrow shot for the life of me anymore. I click on the monster to target, but my character just moves to where the monster is instead of shooting an arrow. I haven't changed my gear so I don't what's going on here. Can someone help?

Nm. Figured it out. Some how "move only" was assigned to the left click button.