SQL Server 2012 Reporting services Report Builder ClickOnce in SharePoint integrated mode

Hi

I've installed SSRS 2012 in Integrated Mode with SharePoint 2013.

I've created RS Application, I have the Content types for Report Builder Report but when I try to create a new Report Builder Report from a document library (using ribbon) it try to lauch the following url

http://sp2013/bi/_layouts/15/ReportServer/RSAction.aspx?RSAction=ReportBuilder&FileUrl=http://sp2013/_layouts/15/ReportServer/rs.rsapplication&SaveLocation=http%3A%2F%2Fsp2013%2Fbi%2FDocuments&Source=http%3A%2F%2Fsp2013%2Fbi%2FDocuments%2FForms%2FAllItems%2Easpx

which gives an 404 Not found error

I've installed Report Builder 3.0 as standalone because from SQL installation I didn't get an Report Builder

What else should I do ?

I've noticed that ReportBuilder_3.....application is in webservices folder of sharepoint

Please help

Sorin Sandu