1. Corrupted files message when uploading
A message stating that you have "x" number of corrupted files indicates that at some point from the stime you pressed "start" on your garmin to the time you pressed "Finish" and "reset" the GPS data was corrupted.
This may take the form of:
a.A sequence of missing data points
b.Restarting a previous ride when you had not "reset", ie you pressed stop in location A and restarted the same ride at location B which is 20kms from the end of location A
c.Restarting a previous ride from the day before, ie you pressed stop on Saturday and resumed the ride on Sunday
If this issue persists, please create a support ticket