310XT and latest update of Garmin Express - Can't transfer data anymore

Late reply, but I grabbed all my data using the Linux tool someone wrote and then master reset my device. Seems to work now. For the record, I manually created the course in Connect.

Having to master reset it / use the Linux tool is irritating but at least the open standard you use means I'm not losing any data.

For anyone having this issue, please try updating to the newest Garmin Express version 4.0.17. After doing this, if you continue to have issues, follow these steps to clear old data out of Garmin Express. Note that this will delete any devices in Express and they will need to be paired again with Express.

First, we need to delete the device sync folders from Express:

• Go to %programdata%\Garmin\CoreService\Devices
  
• Delete any numbered folders in this folder
  

Next, let's delete the device xml data:

At %programdata%\Garmin\CoreService, there are two xml files we want to delete: devices_list.xml and device_data_store.xml. After deleting these files, restart the computer and run Garmin Express again. This will make you start with a "clean slate" on the program and you will have to pair the device with the application again.

Ryan

Hey Ryan, maybe you'd like to explain what corrective steps Garmin will be taking in future software releases to address this recurring problem of your software corrupting its own data files?

Ryan's solution above and in post 27 worked for me after spending ages trying other things. I deleted the device folder although also had to delete my husband's device. It uploaded a trial run after this although the files from last week are now permanently lost as I deleted all my history from my device and reset it to factory settings in previous steps to try and sort it.

Silence from the support.. surprising... not.

It's pretty serious that all these issues being ignored over and over again and all they come up with are work arounds... Spend the time fixing the problem instead and you will have happy customers rather than annoyed ones...

Silence from the support.. surprising... not.

It's pretty serious that all these issues being ignored over and over again and all they come up with are work arounds... Spend the time fixing the problem instead and you will have happy customers rather than annoyed ones...

Every single "solution" they suggest is a "reset" of one form or another. Either reset the software by deleting all of its stored configurations, or hard reset the device itself.

After going around and around a few times with the email support, they're now claiming that this is due to errors in the data files introduced by the satellite receiver. Why they can't seem to account for these errors in their software, despite many months of customer complaints, remains an open question.

Here's what Garmin Support is now saying:

There is a folder in Garmin Express that essentially is a hand-off from the device. When your ANT+ device syncs its data (as seen by the Transferring Data screen on the device) it sends any new activity files into this folder. Once they transfer to this folder, they get pushed to Garmin Connect which changes their extension to the more known .FIT extension. Often times with ANT+ devices, the folder already has files inside it that haven't transferred, or are duplicates to what Express sees on the device. Garmin Express will pass over those files thinking they are duplicates, and not sync them. When you delete the device information from Express, that folder is removed and any files in it, clearing up the queue.

Additionally, when a lot of files are stored on a device, Garmin Express does a "quick scan" over every file vs what you have on Garmin Connect. If it finds something that is new, it syncs it in chronological order. When it does this process it is reading over every file inside the device, the longer the file is on the device, the higher chance it has of being corrupt. This is common for file transferring with computers (EX from a USB stick or SD card) and is known to happen in the 310XT. With progression in technology, we have stopped this from happening in our other models by having them connect directly as a drive to the computer and transfer that way.

The best way to prevent this from happening would be to clear your history on the device out at least every month, if not week. If your current device seems to be persistent on corrupting the files that it stores, we can look into getting you a replacement device, or even upgrade into a different device.