Please be advised there is a minor defect in the latest release v1.6 of QSO Relay.
This defect will only occur under the following set of circumstances:
In this situation, QSO Relay incorrectly reads the 'cached' contact(s), and you receive the following error message: "The given key was not present in the dictionary".
A new version of QSO Relay will be made available as soon as possible. I sincerely apologize for the inconvenience.
73 Chris VK2BYI