I have bulit some Junit tests and the error below appears when I run them, I have some working tests as I have tested them on another machine, but when I run these tests on my computer the same error appears.
Does anyone have a soloution to solving the errors below. I have the path pointing to Junit.jar, i dont think thats the problem

Exception in thread "main" java.lang.IllegalArgumentException: Error: parameter '-port' not specified
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.defaultInit(RemoteTestRunner.java:2 85)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.init(RemoteTestRunner.java:206)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:195)