Garmin Connect upload problem...
There appears to be a problem when trying to upload .GPX files to Garmin Connect which have been created without timing information.
This certainly happens with Memory Map and may be the reason your .GPX files are being rejected by Garmin Connect.
This webapp adds completely arbitrary timing information to a .GPX file and may solve the problem for you...
Time will be set to today at 00:00:00. Use the set date button to choose your own date. The resulting event wil have a zero duration.
Please note: This application is a quick fix and is not guaranteed or warranted in any way.