usb mp3 player problems

[Michal Pasternak]

FreeBSD mainframe.w.lub.pl 4.9-RELEASE FreeBSD 4.9-RELEASE #1: Sat Jan 10
13:54:41 CET 2004     doc at mainframe.w.lub.pl:/usr/src/sys/compile/MP-UX  i386

uhub0: port error, restarting port 1
umass0: Daisy Technology USB MultiMedia Reader, rev 1.00/1.00, addr 2
umass0: Get Max Lun not supported (STALLED)
da0 at umass-sim0 bus 0 target 0 lun 0
da0: <DIVA USB Media Reader 2.21> Removable Direct Access SCSI-0 device 
da0: 650KB/s transfers
da0: 30MB (62976 512 byte sectors: 64H 32S/T 30C)

mount -t msdos /dev/[r]da0[c] /mnt -- only replies with "Invalid argument"
and I am pretty sure flash inside reader is formatted properly, I have
"options MSDOSFS" in my kernel an the reader itself works (eg. no problem on
Windows 2000) 

Any help appreciated.