Sometimes get Platform::OutOfBoundsException ^

[ewmailing]

I seem to get Platform::OutOfBoundsException ^ some times.
I just leave the test app running, and eventually I see them come in. Sometimes its very quick, sometimes it takes a couple of minutes.

If I break on the exception, the call stack shows UpdateDnssdService. I think it is the line:
Platform::String^ host = box->Value->get(0);
triggering the exception.

I have one Mac on the network with iTunes so it is advertising on the same _dapp._tcp. service that the test app is dealing with. However, I don't think that in itself is triggering the exception. It has always been running and unchanging while I played with the test example. I don't think this is the cause, but mention it for completeness.

Any ideas how to fix this?