!MESSAGE Referenced part does not exist yet: org.eclipse.jdt.ui.PackageExplorer

I am getting this error when running a tester plugin (using SWTBot), for my product:

!ENTRY org.eclipse.ui 4 4 2013-11-07 18:16:48.608
!MESSAGE Referenced part does not exist yet: org.eclipse.jdt.ui.PackageExplorer.
2013-11-07 18:16:48,611 main ERROR

Additionally, i get this exception that basically says that i haven't set my tester plugin as a dependency of my product:

Exception in thread "WorkbenchTestable" java.lang.IllegalArgumentException: No Classloader found for plug-in com.project.test.swtbot
    at org.eclipse.swtbot.eclipse.core.RemotePluginTestRunner.getClassLoader(RemotePluginTestRunner.java:79)
    at org.eclipse.swtbot.eclipse.core.RemotePluginTestRunner.getTestClassLoader(RemotePluginTestRunner.java:73)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.loadClass(RemoteTestRunner.java:693)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.loadClasses(RemoteTestRunner.java:429)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:452)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.swtbot.eclipse.core.RemotePluginTestRunner.main(RemotePluginTestRunner.java:64)
    at org.eclipse.swtbot.eclipse.core.UITestApplication.runTests(UITestApplication.java:117)
    at org.eclipse.ui.internal.testing.WorkbenchTestable$1.run(WorkbenchTestable.java:71)
    at java.lang.Thread.run(Thread.java:619)

I am using Eclipse RCP. Am i interpreting the error correctly? Does anyone have a clue of how to solve this issue?

Many thanks in advance

Solution

Figured it out. For anyone haveing this issue, you should always use (unless somethign creepy happens) "all workspace and enabled target plug-ins" in the launch configurations. This enables your test to validate every dependency that you might not be considering.

Cheers