Oracle Reports 11.1.1 Reports Configuration Error

You might run in an error while you are installing Oracle Reports 11.1.1.2.0 / 11.1.1.3.0 / 11.1.1.4.0, that the configuration step "Executing: opmnctl startproc ias-component ..." will throw an error.
The error message just state that while executing the command "opmnctl startproc ias-component=ReportsServer_<servername>_<instance>" an error occurs. If you check the corresponding Install Logfile, you will not find something really...