Acronis Echo Server BKP Problem with network shared folder

I try out this software in my firm, but I have found this serious problem:
I' ve configured default backup location on the backupserver to a network shared folder on another PC in my LAN.
I remotely backup a pc on the lan but acronis shows me this error on logs:

<event code="1001" id="10" level="4"
"Failed to open the storage server device/file bsp://192.168.0.6/\backupserver\BackupServer||\| for write: 262.145." module="1" time="1240828605" />

bkp on network shared folder isn't possible?

thanks in advance