You have SQL Server installed on your SQL Server but have you installed the SSRS components, are the services running can you get to the SQL Server Report Manager configuration tool?
SQL reporting services installed with SQL Server and successfully logged in to report manager.
it is installed on a named instance (both instance used for ivanti SM and report server). should this create a problem?
I am really lost about this issue as all is well configured.
Just to check where have you installed the Ivanti reporting module, it should be installed on the SQL Server. The reason I ask is that the configuration wizard you have in the image looks to be an ISM application server config screen.