Maybe it's a temporary thing, but the TCX and GPX files I export from one of my activities can't be processed by other programs this morning. The exported file is non-zero in size but seems to have no information. Export to Google Earth fails (jumps to "This webpage is not available"), and so does the "Save as Course" function (the new course shows a start point but no routed path).
The problematic activity is publicly visible, so here it is: http://connect.garmin.com/activity/616306043
I tried another, more recent, activity and the export worked fine. But a third activity I randomly chose also failed to export correctly. Any ideas?