DPE Error 3355320130 when restoring Exchange 2003 Information Store

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Hi

When I try to restore an Exchange 2003 Information Store to a Recovery Storage Group using HP Data Protector Express I get an error:
The object First Storage Group could not be restored. See job log for further details.

Objects: Network\SERVERNAME\Microsoft Exchange Server.
Error 3355320130: See your documentation for error information.
Rst: First Storage Group.

I could use some help...