Obsession with twngan

MapIt is one of the newer Mozilla/Firefox extension that I installed and actually liked. It is so convenience to select an address and then get a map within two clicks. It used to have problems parsing addresses and required human intervention in most of the time. I just updated it to the latest 0.5 and it is completely broken now. It seems like Firefox failed to even parse its source code... Is it really that hard to get an extension right?