After installing ConfigMgr 2012 at a customer site I encountered an odd problem. I had just added the Reporting Services Point and all looked normal. The reports were available in the ConfigMgr console and in SQL Server Reporting Services. I could right click on a report but nothing happened when I tried to run it - no error, nothing.
After some troubleshooting I noticed that Report Viewer had not been installed during the installation.
I navigated to "C:\Program Files (x86)\Microsoft Configuration Manager\AdminConsole\bin"
Double clicked on ReportViewer.exe
Started the installation of MS Report Viewer 2010 SP1
Then I could run my reports