A dialog pops up saying, "Checking if rails is installed Reason: java.lang.NullPointerException" An internal error occurred during: "Checking if rails is installed". java.lang.NullPointerException This appears to be the relevant log entry: !ENTRY org.eclipse.core.jobs 4 2 2008-02-02 00:35:48.764 !MESSAGE An internal error occurred during: "Checking if rails is installed". !STACK 0 java.lang.NullPointerException at com.aptana.rdt.AptanaRDTPlugin.checkBinDir(AptanaRDTPlugin.java:520) at org.radrails.rails.internal.core.RailsPlugin.buildBinExecutablePath(RailsPlugin.java:418) at org.radrails.rails.internal.core.RailsPlugin.getRailsPath(RailsPlugin.java:377) at org.radrails.rails.internal.ui.RailsInstalledChecker.checkRailsInstalled(RailsInstalledChecker.java:68) at org.radrails.rails.internal.ui.RailsInstalledChecker.run(RailsInstalledChecker.java:51) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) These two are probably unrelated but show up at the same time... Are they related, should I open separate bugs for them, or are they ignorable? !ENTRY org.eclipse.osgi 2 0 2008-02-02 00:34:36.438 !MESSAGE While loading class "org.eclipse.mylyn.internal.tasks.ui.WorkspaceAwareContextStore", thread "Thread[main,6,main]" timed out waiting (5000ms) for thread "Thread[Worker-0,5,main]" to finish starting bundle "update@plugins/org.eclipse.mylyn.tasks.ui_2.1.0.v20070927-0900.jar [197]". To avoid deadlock, thread "Thread[main,6,main]" is proceeding but "org.eclipse.mylyn.internal.tasks.ui.WorkspaceAwareContextStore" may not be fully initialized. !STACK 0 org.osgi.framework.BundleException: State change in progress for bundle "update@plugins/org.eclipse.mylyn.tasks.ui_2.1.0.v20070927-0900.jar" by thread "Worker-0". at org.eclipse.osgi.framework.internal.core.AbstractBundle.beginStateChange(AbstractBundle.java:1141) at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:258) at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:400) at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:111) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:417) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:189) at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:340) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClassInternal(BundleLoader.java:408) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:369) at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:357) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:83) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) ... etc and !ENTRY com.aptana.rdt 4 -1 2008-02-02 00:35:49.439 !MESSAGE Internal Error !STACK 1 org.eclipse.core.runtime.CoreException: Main type not specified at org.rubypeople.rdt.launching.AbstractRubyLaunchConfigurationDelegate.abort(AbstractRubyLaunchConfigurationDelegate.java:47) at org.rubypeople.rdt.launching.AbstractRubyLaunchConfigurationDelegate.verifyFileToLaunch(AbstractRubyLaunchConfigurationDelegate.java:393) at org.rubypeople.rdt.launching.RubyLaunchDelegate.launch(RubyLaunchDelegate.java:50) at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:766) at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:608) at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:601) at com.aptana.rdt.internal.core.gems.GemManager.launchInBackgroundAndRead(GemManager.java:205) at com.aptana.rdt.internal.core.gems.GemManager.launchInBackgroundAndRead(GemManager.java:242) at com.aptana.rdt.internal.core.gems.GemManager.addSourceURL(GemManager.java:546) at com.aptana.rdt.internal.core.gems.GemManager$5.run(GemManager.java:742) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) !SUBENTRY 1 org.rubypeople.rdt.launching 4 101 2008-02-02 00:35:49.439 !MESSAGE Main type not specified