The error message can result from a wide variety of issues. Below is a list of the most common issues:

• The SD card may be write protected. When write protected, data cannot be written to the SD  card. On the SD card there is a small locking mechanism that can slide up and down. To be unlocked, the locking tab should be closer to the metal contacts on the SD card. Furthermore, the process of inserting the SD  card into your Garmin device and/or SD card programmer may move the locking tab out of place.
• The card programmer cannot read or write to a high capacity card. Some card programmers cannot handle high capacity SD cards without a software download or driver update.
• There is an error or bad data region on the SD card. Perform an error checking scan of the card through Windows to correct the errors.