C:\Program Files\Microsoft SQL Server\100\Shared\msxmlsql.dll to C:\Program Files\Microsoft SQL Server\MSSQL10_50.[veeam-dbinstance]\MSSQL\Binn
then copy "msxmlsql.rll" from C:\Program Files\Microsoft SQL Server\100\Shared\Resources\1033\msxmlsql.rll to C:\Program Files\Microsoft SQL Server\MSSQL10_50.[veeam-dbinstance]\MSSQL\Binn\Resources\1033