On some infrequent occasions the map frame does not show for an activity. This has happened to me about 5 times this year and generally it is displayed so it is not that I cannot see map data full stop.
Any advice? and is this data lost now? During the activities in question the forerunner seemed to be tracking as usual (there was no reason to think that it wasn't recording properly at the time).
Device - Forerunner 305
OS - Windows Vista
Browser - Google Chrome (although I have tried viewing the said activities in Firefox7 and IE7)