I really hope someone can help me with a hair puller. I'm relatively well versed in photoshop. I've been attempting to familiarize myself with illustrator (cs6 on win if it makes a difference).

All of a sudden by brush icon no longer has the circle showing the brush boundary:

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Now the CAPSLOCK IS NOT ON, as you can see I don't have a crosshair, just a brush with an x instead of the boundary circle. The Blob brush looks fine:

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I've tried double clicking on the brush and resetting it to default, closing the program and re-opening it, searched through every option I could think of...If anyone has any suggestions, I would really appreciate it... I'm close to pulling my hair out over this one.