Cannot connect to Reporting Services with Managment Studio

I've just set up a new instance of SSRS 2012 and I'm unable to connect to it through Management Studio. The error I get is:

TITLE: Connect to Server
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Cannot connect to <server_name>.

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ADDITIONAL INFORMATION:

Unable to connect to the server at <server_name>. The specified URL might not be valid or there might be a problem with the report server version or configuration. Specify a different URL, or contact your server administrator to verify that the report server runs SQL Server 2008 or later. Additionally, if you are trying to connect to a SharePoint-integrated report server, verify that SharePoint is installed on the server and that the report server uses SharePoint integrated mode. (Microsoft.SqlServer.Management.UI.RSClient)

It is a native report server. Reporting Services is running on a separate server to the reporting databases (but I doubt if this matters).
I can connect to the management URL fine. It is using SSL. Does this matter when connecting from Management Studio?
Any help appreciated.