A few weeks ago SP1 was released for Project Server (and SharePoint etc). Unfortunately it was quickly removed again for reasons I am not aware of. The great news is that SP1 is now out again including a Cumulative Update package (April 2014).
In order to get answers to your deployment please read the great blog entry by Brian Smith (Microsoft): http://blogs.technet.com/b/projectsupport/archive/2014/04/24/project-server-2013-service-pack-1-and-april-2014-cumulative-update-all-you-need-to-know.aspx
Here you can find the notes and actual files ready for download:
KB 2880551 – SharePoint Foundation 2013 SP1
KB 2880552 – SharePoint Server 2013 SP1
KB 2880553 – Project Server 2013 SP1
KB 2880554 – SharePoint Server Language Pack
KB 2880555 – SharePoint Foundation Language Pack
KB 2880558 – Office Web Apps Server 2013 SP1
Download links for updated SP1:
SharePoint Foundation 2013 Service Pack 1
SharePoint Foundation 2013 Language Pack Service Pack 1
SharePoint Server 2013 Service Pack 1
SharePoint Server 2013 Language Pack Service Pack 1