I have ...
Eclipse 3.1
JBossIDE-1.4.1-e30.zip
When I click on the "Server Navigator" window and choose "Configuration".
Then click "JBoss 4.0.x" and then "New" I get the message
"An error has occured. See log for more details."
The log has the stack trace...
!ENTRY org.eclipse.jface 4 2 2005-08-17 09:36:38.186 !MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.jface". !STACK 0 java.lang.NoSuchMethodError: org.eclipse.jdt.internal.debug.ui.launcher.LauncherMessages.getString(Ljava/lang/String;)Ljava/lang/String; at org.jboss.ide.eclipse.launcher.ui.configuration.ServerLaunchArgumentsTab.createControl(ServerLaunchArgumentsTab.java:86) at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationTabGroupViewer.showTabsFor(LaunchConfigurationTabGroupViewer.java:720)
Update...
I've found this thread on the same problem as mine.
http://jira.jboss.com/jira/browse/JBIDE-190