Problem launching WO533 project

I'm having problems launching projects in my WO533 workspace.

This is the error I'm getting at launch:

NSPropertyListSerialization.dictionaryWithPathURL didn't show up until WO5.4...

Oct 06 16:08:42 SNAdmin[5599] (_PBXProjectWatcher.java:53) DEBUG com.webobjects._ideservices._PBXProjectWatcher  - Installed NSProjectSearchPath fix
Oct 06 16:08:42 SNAdmin[5599] (_PBXProjectWatcher.java:201) DEBUG com.webobjects._ideservices._PBXProjectWatcher  - Found NSProjectSearchPath: ("..", "../..", "
/Users/david/Code/WO53Workspace/OXFoundation", "/Users/david/Code/Wonder/Wonder/Frameworks/Core/ERExtensions", "/Users/david/Code/Wonder/Wonder/Frameworks/Core/
ERJars", "/Users/david/Code/Wonder/Wonder/Frameworks/Core/JavaWOExtensions", "/Users/david/Code/Wonder/Wonder/Frameworks/Ajax/Ajax", "/Users/david/Code/Wonder/W
onder/Frameworks/Core/ERPrototypes", "/Users/david/Code/WO53Workspace/OXLook", "/Users/david/Code/Wonder/Wonder/Frameworks/BusinessLogic/ERAttachment", "/Users/
david/Code/Wonder/Wonder/Frameworks/Core/ERDirectToWeb", "/Users/david/Code/Wonder/Wonder/Frameworks/Misc/WOLips", "/Users/david/Code/Wonder/Wonder/Frameworks/C
ore/WOOgnl", "/Users/david/Code/WO53Workspace/SNBusinessLogic", "/Users/david/Code/Wonder/Wonder/Frameworks/EOF/ERIndexing", "/Users/david/Code/WO53Workspace/SN
Core", "/Users/david/Code/Wonder/Wonder/Frameworks/Core/ERJavaMail", "/Users/david/Code/Wonder/Wonder/Frameworks/Core/ERNeutralLook")
Oct 06 16:08:42 SNAdmin[5599] (_PBXProjectWatcher.java:302) DEBUG com.webobjects._ideservices._PBXProjectWatcher.Files  - openProjectsAppropriateForFile /Develo
per/WebObjects/Versions/WO533/System/Library/Frameworks/JavaDirectToWeb.framework: ()
Oct 06 16:08:42 SNAdmin[5599] (ERXNSLogLog4jBridge.java:43) WARN  NSLog  - A fatal exception occurred: com.webobjects.foundation.NSPropertyListSerialization.dic
tionaryWithPathURL(Ljava/net/URL;)Lcom/webobjects/foundation/NSDictionary;
[2010-10-06 16:08:42 EDT] <main> java.lang.NoSuchMethodError: com.webobjects.foundation.NSPropertyListSerialization.dictionaryWithPathURL(Ljava/net/URL;)Lcom/we
bobjects/foundation/NSDictionary;
	at com.webobjects._ideservices._PBProject.readPBProjectFile(_PBProject.java:692)
	at com.webobjects._ideservices._PBProject.parse(_PBProject.java:620)
	at com.webobjects._ideservices._PBProject.pbProjectAtPath(_PBProject.java:200)
	at com.webobjects._ideservices._IDEProjectPB.pbProjectAtPath(_IDEProjectPB.java:45)
	at com.webobjects._ideservices._WOProject.ideProjectAtPath(_WOProject.java:102)
	at com.webobjects.appserver._private.WOProjectBundle._isProjectBundlePath(WOProjectBundle.java:226)
	at com.webobjects.appserver._private.WOProjectBundle._projectsInDirectory(WOProjectBundle.java:284)
	at com.webobjects.appserver._private.WOProjectBundle._WOAllProjects(WOProjectBundle.java:459)
	at com.webobjects.appserver._private.WOProjectBundle.projectBundleForProject(WOProjectBundle.java:493)
	at com.webobjects.appserver._private.WODeployedBundle.projectBundle(WODeployedBundle.java:807)
	at com.webobjects.appserver.WOResourceManager._bundleWithNSBundle(WOResourceManager.java:136)
	at com.webobjects.appserver.WOResourceManager._locateBundleForFrameworkNamed(WOResourceManager.java:156)
	at com.webobjects.appserver.WOResourceManager._cachedBundleForFrameworkNamed(WOResourceManager.java:178)
	at com.webobjects.appserver.WOResourceManager._initFrameworkProjectBundles(WOResourceManager.java:199)
	at com.webobjects.appserver.WOResourceManager.<init>(WOResourceManager.java:40)
	at er.extensions.appserver.ERXResourceManager.<init>(ERXResourceManager.java:43)
	at er.extensions.appserver.ERXApplication.createResourceManager(ERXApplication.java:992)
	at com.webobjects.appserver.WOApplication.<init>(WOApplication.java:608)
	at er.extensions.appserver.ajax.ERXAjaxApplication.<init>(ERXAjaxApplication.java:22)
	at er.extensions.appserver.ERXApplication.<init>(ERXApplication.java:999)
	at com.oxiox.core.OXApplication.<init>(OXApplication.java:9)
	at com.oxiox.sn.core.SNApplication.<init>(SNApplication.java:52)
	at com.oxiox.sn.admin.Application.<init>(Application.java:15)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
	at java.lang.Class.newInstance0(Class.java:355)
	at java.lang.Class.newInstance(Class.java:308)
	at com.webobjects.appserver.WOApplication.main(WOApplication.java:323)
	at er.extensions.appserver.ERXApplication.main(ERXApplication.java:783)
	at com.oxiox.sn.admin.Application.main(Application.java:12)

;david

--
David LeBer
Codeferous Software
'co-def-er-ous' adj. Literally 'code-bearing'
site: 	http://codeferous.com
blog: 	http://davidleber.net
profile:	http://www.linkedin.com/in/davidleber
twitter:	http://twitter.com/rebeld
--
Toronto Area Cocoa / WebObjects developers group:
http://tacow.org




;david

--
David LeBer
Codeferous Software
'co-def-er-ous' adj. Literally 'code-bearing'
site: 	http://codeferous.com
blog: 	http://davidleber.net
profile:	http://www.linkedin.com/in/davidleber
twitter:	http://twitter.com/rebeld
--
Toronto Area Cocoa / WebObjects developers group:
http://tacow.org