Bug 19468

Summary: NPE trying to launch a run configuration
Product: [Eclipse Project] PDE Reporter: Jean-Michel Lemieux <jean-michel_lemieux>
Component: UIAssignee: Dejan Glozic <dejan>
Status: RESOLVED FIXED QA Contact:
Severity: major    
Priority: P1    
Version: 2.0   
Target Milestone: 2.0 M3   
Hardware: PC   
OS: Windows 2000   
Whiteboard:

Description Jean-Michel Lemieux CLA 2002-06-06 06:16:54 EDT 
build f2:
I created the default eclipse self hosting run configuration and have been
running with it for a while. this morning after trying again an error is shown
that an internal exception has occured and the following was in the log:

note: i can't launch anymore, i'm really stuck!

java.lang.NullPointerException
	at java.util.Hashtable.put(Unknown Source)
	at java.util.Properties.setProperty(Unknown Source)
	at
org.eclipse.pde.internal.ui.TargetPlatform.createPropertiesFile(TargetPlatform.java:105)
	at
org.eclipse.pde.internal.ui.launcher.WorkbenchLaunchConfigurationDelegate.doLaunch(WorkbenchLaunchConfigurationDelegate.java:158)
	at
org.eclipse.pde.internal.ui.launcher.WorkbenchLaunchConfigurationDelegate.launch(WorkbenchLaunchConfigurationDelegate.java:75)
	at
org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:136)
	at
org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationDialog$10.run(LaunchConfigurationDialog.java:2279)
	at
org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:98)
Comment 1 Dejan Glozic CLA 2002-06-06 19:59:11 EDT 
Check the configuration by calling 'Run...' and switch to the plugins and 
fragments tab. If you see any of the plug-ins with an error overlay, check if 
the plugin.xml or fragment.xml for that plug-ins has errors. You probably do 
not have PDE perspective associated with your projects, otherwise PDE builder 
would flag errors and create markers in the task list.
Comment 2 Dejan Glozic CLA 2002-06-06 21:38:47 EDT 
Fixed. 

I am 99% sure that you have broken plug-ins (i.e. syntax errors in plugin.xml 
or fragment.xml). To catch this earlier, consider attaching PDE nature to your 
projects - this will cause PDE builder to run and flag syntax errors in plugin 
manifests the usual way (in the task list).

PDE will not flag broken plug-ins during the launch (but will allow you to 
continue with it). Note that launching with errors in the manifest files will 
cause those plug-ins to be disabled by the run-time workbench instance.