New Post: Locking up on hitting breakpoint?

I run this (with a real address in it) from a file using the !py command in windbg and it sets the bp, but when it hits, windbg says "Exception in debugger client" and locks up. What am I doing wrong? I'm using x64 windbg and downloaded and installed pykd-0.2.0.29-x64-python-2.7

import pykd

def hitBp(ID):      
        
    print("hats")

    return pykd.NoChange

pykd.setBp(address, hitBp)