I use Google MyMaps to plan trips and export KMZ files which I could then directly import into GPS Essentials. With GPSE 4.4.64, icons would display properly. However, recently they are showing as red Xs. I believe the problem started when I upgraded from 4.4.64 to 4.5.15. Previously imported KMZ files display properly, so I suspect it is an issue with the import step. I have attached a sample KMZ file (Port Canaveral.kmz) .
I was able to recreate the problem on a device that was still on 4.4.64. I successfully imported the KMZ (GPS Essentials-before.jpg ). I then upgraded to 4.5.20 which tried to convert the existing database but failed. I imported the KMZ and got the red Xs (GPS Essentials-after.jpg). After a reboot, I tried migrating the database and was successful - the KMZ that I successfully imported on 4.4.64 displayed correctly on 4.5.20.