GPSMAP® 66st KMZ not load from SD Card

Hello,
I have a problem with KMZ file on my GPS Map 66st! When it is uploaded to the internal memory,
the map is displayed, but when it is uploaded to the external SD card (32GB),
it does not appear in the map menu.
The KMZ file opens and loads in a Basecamp.
Path is the same on internal and external memory: Garmin/CustomMaps.
I tried everything: Upload from Basecamp, hard reset, deleting configuration files,
deleting all installed maps, formatting the sd card(not quick) but nothing helps.
IMG files on the external card are loaded without any problems.
When a Basecamp attempts to load the map when GPS connected to the PC,
the following error occurs:
"There was a problem communicating with Memory Card (J.
An error occured while reading the following file(s):
Garmin/CustomMaps/CropPaint.kmz"

I run Basecamp in debug mode and see in log file:
19:34:24: 3/26/2019***************** New Run ****************************
User Default Culture is 'en-US'.
19:34:24: Trying to load resources for culture 'en-US'.
19:34:24: Searching for Neutral culture with parent 'en'.
19:34:24: Trying to load resources for culture 'en'.
19:34:24: Resources for 'en' loaded.
19:34:25: After setting RegValue ApplicationWorkspace to Y:\Garmin\Data\
19:34:42: Log: Invalid kmz file J:/Garmin/CustomMaps/CropPaint.kmz: File could not be imported.

I tried with other kmz files without success!

Any ideas?