Healing Brush Tool Moves Picture

I have been using CS6 for quite some time and often use the Healing Brush Tool.  Today however, when I tried to use the tool it did not work at all.  Instead, when I tried to select the area to use for healing, the tool seemed to grab the picture and move it around as if I had selected the entire image and used the Move Tool.  I tried reloading the picture, and got the same results and tried reloading Photoshop, also with no results.  The other "healing tools", Spot Healing, and  Patch  Tools work fine.  Any Ideas of what might be causing this?