(File Missing: C:\..\x86\vc_red.msi ) in EV10.0

hey guys,

i have this environment

- MS Server 2012 R2 (x64)

- SQL Server 2008 

- Enterprise Vault 10.0

- Exchange Server 2013

i hope someone can help me. When i begin to install EV10.0, it shows this error "File missing: c:\..\x86\vc_red.msi". but i found this file in the path, when i run it in the folder, it shows me this error "This installtion package could not be opened. Contact the application vendor to verify that is a valid windows installer package".

Any idea??

thanks..