Error While Installing EMP ADD IN BIG VOL

During the installation process of EPM ADD IN FOR BIG VOL SP 18 Patch 1 ( Server: BPC 10 MS SP 13 )   a dos prompt appears with a lots of errors . Those errors are about load of

asembly "BusinessObjects.DSWS.Session, Version=14.0.2000.0 , Culture=neutral, PublicKeyToken=692fbea5521e1304 ' see  below image

Any one had the same issue ?

Thanks

Samuele B.