Running the IW11IPhoneDemo I get the following error if I click the Set Current Location button (on call to TIWIPhoneGeolocation1.RetrieveLocation):
EConvertError - '41,42729371' is not a valid floating point value
I am in the US. We use a period for the decimal seperator so perhaps it should be 41.42729371 instead?
I created a new test app from scratch to see if maybe it was something stored in the demo but had the same results.
Perhaps a bug?