Manually taking an apache instance into inventory with a NPE, when only the server root is given, but not the path to the httpd.
This is possibly due to the fact that my httpd 2.0.x is called httpd and not apache2

Caused by: java.lang.NullPointerException
        at org.rhq.plugins.apache.ApacheServerComponent.getExecutablePath(ApacheServerComponent.java:278)
        at org.rhq.plugins.apache.ApacheServerComponent.start(ApacheServerComponent.java:136)
        at sun.reflect.GeneratedMethodAccessor48.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.rhq.core.pc.inventory.ResourceContainer$ComponentInvocationThread.call(ResourceContainer.java:446)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
        at java.util.concurrent.FutureTask.run(FutureTask.java:123)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
        at java.lang.Thread.run(Thread.java:613)

Binary info is null here on first manual add:

            if (systemInfo.getOperatingSystemType() != OperatingSystemType.WINDOWS) // UNIX
            {
                if (this.binaryInfo.getVersion().startsWith("2.")) { // <<<<<------- HERE
                    executableFile = new File(serverRoot, "bin/apache2");
                } else {
                    executableFile = new File(serverRoot, "bin/httpd");
                }


Later on, this code block fails again, as a httpd2 does not necessarily need to be called apache2


Workaround: give the full data for Server Root, Executable Path and Control Script Path