The Garmin Connect Plugin can't find any activities which are on the SD Card ("GARMIN SD" in the upload area of Garmin Connect). The progress indicator run to the end (100%) and then nothing happens. The problem is on FireFox, Chrome and Safari (all up tp date). Plugin is in version 4.0.4. Running on OS X version 10.8.3 (also up to date). Reinstalling the plugin doesn't help.
See screenshot: