http://tech.chitgoks.com/2012/03/12/fix-the-unable-to-restore-the-previous-timezone-in-gwt/
This article solve my proble with gwt
I'm new to Google App Engine, and I tried to create a test project on Ubuntu 11.04 following this quick tutorial http://www.youtube.com/watch?v=P3GT4-m_6RQ&feature=relmfu and I have this error when i click on "debug > web application"
Latest SDK: Release: 1.6.2 Timestamp: Tue Jan 03 19:15:38 CET 2012 API versions: [1.0]
Your SDK: Release: 1.6.1 Timestamp: Mon Dec 12 23:53:13 CET 2011 API versions: [1.0]
Please visit http://code.google.com/appengine for the latest SDK.
java.lang.RuntimeException: Unable to restore the previous TimeZone
at com.google.appengine.tools.development.DevAppServerImpl.restoreLocalTimeZone(DevAppServerImpl.java:228)
at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerImpl.java:164)
at com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:164)
at com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:48)
at com.google.appengine.tools.development.DevAppServerMain.<init> (DevAppServerMain.java:113)
at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:89)
Caused by: java.lang.NoSuchFieldException: defaultZoneTL
at java.lang.Class.getDeclaredField(Class.java:1899)
at com.google.appengine.tools.development.DevAppServerImpl.restoreLocalTimeZone(DevAppServerImpl.java:222)
... 5 more
Can anybody determine where the problem is? I also had problems trying to create a GWT app and a Python App Engine project.
This article solved my problem with GWT: Fix The Unable To Restore The Previous TimeZone In GWT.