ABR10 - Unable Validate and Reover backup files.

Hi,
We having problem in validating or recovering the backup image(which is backup successfully). we are using Acronis Backup & Recovery 10 to backup our file server. the following is the information of our backup task:
source type: Disks/volumes
items to back up: "entire disk"
Archieve: personal vault (where the exact location was on other server, we are using mapped drive.

the backup was successful, i was able to mount the backup database to a drive and access the data, but i could not perform validation or recover on the backup database.

when perform recover:
system was able to detect the backup database and i was able to expand the backup contents.
after i save and run the recover action, it failed and prompted be the following message:
=============================================================
Failed to resolve archive URI.
Additional info: --------------------
Error code: 30
Module: 146 LineInfo: 16f6658ee1284b47
Fields: $module : D:\Program Files (x86)\Acronis\BackupAndRecovery\mms.exe
Message: Failed to resolve archive URI.
--------------------
=============================================================

when perform validation:
item: Archive
Archive: Personal Vault
after save and run the task, the following error occured:
=============================================================
Failed to open the metadata directory.
Additional info:
--------------------
Error code: 640
Module: 64
LineInfo: a1d3981537c6874d
Fields: IsReturnCode : 1, $module : D:\Program Files (x86)\Acronis\BackupAndRecovery\mms.exe
Message: Failed to open the metadata directory.
--------------------
Error code: 14
Module: 64
LineInfo: 97675718d2b52d17
Fields: path : file:B:\acronis_daily_backup\[Folder]\
Message: Failed to open the backup location.
--------------------
Error code: 7
Module: 4 LineInfo: f35f747b3b21fb14
Fields: function : FindFirstFileW, filename : \\?\B:\acronis_daily_backup\[Folder]\*
Message: Error occurred while opening the file.
--------------------
Error code: 65520
Module: 0
LineInfo: bd28fdbd64edb8bc
Fields: code : 2147942403
Message: The system cannot find the path specified
--------------------
=================================================================

please help, is it because of the backup location was stored at remote location?

thank in Advanced
CF