TestNG An internal error occurred during launching
I encountered a problem with similar symptoms today. I’m not sure if it is the same problem but it matches everything in your question. In my case, the log files said: !ENTRY org.eclipse.core.jobs 4 2 2015-12-03 15:49:19.369 !MESSAGE An internal error occurred during: “Launching NewTest”. !STACK 0 java.lang.NullPointerException at org.testng.eclipse.maven.MavenTestNGLaunchConfigurationProvider.getVMArgsFromPom(MavenTestNGLaunchConfigurationProvider.java:74) So my problem was that … Read more