Delete the suspicious file from your watch and follow my instruction from post before https://forums.garmin.com/forum/on-t...89#post1283289
...btw. you said you have it already imported into GC - so you doesn't need it on the watch anymore...
Or you can enter the suspicious file in the completed upload xml file from GE device folder...
(Type4 should be an activity - other Typexx are for eg. courses and so on)
Add just a new line in CompletedUploadsV3_FIT_TYPE_4.xml and
enter between "<string>xxx</string>" the filename of your suspicious file that caused the sync error.
Now the sync process should skip the file at upload...
One of your activities (or courses) is corrupted (had the same problem). Found the solution in another forum (can't remember wich one...)
1) If you can find out wich one (e.g. by syncing them on batches to garmin web dashboard uploader), delete it from your watch.
2) After then remove your watch from Garmin Express
3) delete the device folder from your watch from your pc - found in "C:\ProgramData\Garmin\CoreService\Devices\xxx"
4) add your watch again in garmin express and sync it
One of your activities (or courses) is corrupted (had the same problem). Found the solution in another forum (can't remember wich one...)
1) If you can find out wich one (e.g. by syncing them on batches to garmin web dashboard uploader), delete it from your watch.
2) After then remove your watch from Garmin Express
3) delete the device folder from your watch from your pc - found in "C:\ProgramData\Garmin\CoreService\Devices\xxx"
4) add your watch again in garmin express and sync it