David: We're certainly sorry you ran into issues. However, we stand by the methods we used to alert users - in addition to the drastic step of retracting the update, we issued our warnings via the same methods the update was announced, as well as to any affected developers.

Any cost/benefit analysis needs to consider our raw number of users (tens of thousands) vs. the number of people affected (a few hundred). Causing needless worry and wasting the time of tens of thousands of people who hadn't installed the update at all was not worth it. "Communication" is too broad a term, but unnecessary warnings certainly CAN be the wrong move - there was immense downside, of scaring folks who had nothing to be worried about at all.

As I said, we're certainly sorry you had to spend time figuring this out, but in aggregate, we stand by the steps we took.