Like it says. The device is recognized as a USB device but not as a USB mass storage device. It is in MSC mode.
usb 2-4: new high speed USB device using ehci_hcd and address 9
hub 2-0:1.0: unable to enumerate USB device on port 4
usb 2-4: new high speed USB device using ehci_hcd and address 10
usb 2-4: configuration #1 chosen from 1 choice
Relevant lsusb output:
Bus 002 Device 010: ID 0781:74d1 SanDisk Corp.
Nothing in /proc/scsi/scsi.
This device is supposed to support MSC. Any ideas?