SoapUI SecurityTest Java/JUnit: no factory for this scan type exists

Hi, I use Java / JUnit to run my SoapUI PRO TestSuites. Actually this works fine with:

SoapUIProTestCaseRunner runner = new SoapUIProTestCaseRunner();
runner ...

No errors when running this test.

Now, I've added a security test (with SecurePRO) to the same TestCase.

It seems as I have to run this special security test with:

SoapUISecurityTestRunner runner = new SoapUISecurityTestRunner();
runner ...

When running this test, I get following error:

16:28:43,844 ERROR [SecurityTest] Could not create security scan with type: HttpMethodFuzzingScan, no factory for this scan type exists

Anyone know what this could mean?

Do I miss some dependency?

Both runners come from here:

<dependency>
 <groupId>com.smartbear</groupId>
 <artifactId>ready-api-runners</artifactId>
 <version>1.5.0</version>
 <scope>test</scope>
</dependency>

Full Java JUnit Code:

    String soapuiProjectFile = "SbSoapUI_crm_contact_rest_with_security.xml";

    SoapUISecurityTestRunner runner = new SoapUISecurityTestRunner();
    runner.setProjectFile(getFullPathFilenameSoapUiProjectFile(soapuiProjectFile));
    runner.setPrintReport(true);
    runner.setExportAll(false);
    runner.setOutputFolder(SOAPUIOUTPUTFOLDER);
    runner.setSettingsFile(SOAPUISETTINGSFILE);
    runner.setJUnitReport(true);
    runner.run();

Thanks

Regards, Reto