Installing Project Server 2013 SP1, you welcome yourself to hell! :P
The server went down with the following error.
“Derived method ‘RequiresWebPartClientScript’ in type ‘Microsoft.Office.Project.PWA.WebParts.PWAPart’ from assembly ‘Microsoft.Office.Project.Server.PWA, Version=126.96.36.199, Culture=neutral, PublicKeyToken=71e9bce111e9429c’ cannot reduce access.”
I was wondering why this PS SP1 is such in small size, where as earlier CUs were over a GB. What I beleive it does not contain anything for SharePoint and that would have caused the issue. So I went for SharePoint 2013 SP1, an another hell! :P well it worked after couple of hours of update :)