Question about SanDisk Ultra Dual Drive Luxe

The error message "The file xxx is too large for the target file system" could indicate that the file system on the USB stick has a maximum file size that you have exceeded. Some file systems, such as FAT32, have a maximum file size of around 4 GB. If your USB stick is formatted with FAT32, this could be the reason. You could reformat the stick to a file system such as exFAT, which supports larger files. Note that all data on the stick will be deleted when you reformat it.