Hi Ian
Thanks for jumping in - I think Ben managed to find a workaround for this in the end.
A colleague of mine has since got to the bottom of the issue - it's supposed to set to version 1.2 by default but the way the code is written the call to set this default doesn't get made unless you include an _advancedSettings property in the _spoor section of config.json. We'll be rolling out a fix for this very soon.