memory leak?

memory leak?
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I am getting an error if I leave my XCode simulator on. I am wondering if it is because its a memory leak.
0x1181efc9: addps %xmm5, %xmm6 the error given is Thread 1:EXC_??? (11) (code=0,subcode=0c0)

Does anyone have an idea of what this means? I believe the hex is most likely a memory address which is why i think its a memory leak