Apache Directory Studio Fails to start on Ubuntu 9.04

I needed to install Apache Directory Studio this morning and after downloading unpacking version 1.4.0 I could not get it to run. Starting ADS at the command line resulted in the following output, the splash screen and a small sad blank window.

$ ./ApacheDirectoryStudio
0    [main] INFO  org.apache.directory.studio.Application  - Entering Apache Directory Studio.
4003 [main] INFO  org.apache.directory.studio.Application  - Exiting Apache Directory Studio.

Reading the logs in ~/.ApacheDirectoryStudio/.metadata/.log revealed an exception:

!ENTRY org.eclipse.ui.workbench 4 0 2009-10-29 09:29:30.476
!MESSAGE Widget disposed too early!
!STACK 0
java.lang.RuntimeException: Widget disposed too early!
at org.eclipse.ui.internal.WorkbenchPartReference$1.widgetDisposed(WorkbenchPartReference.java:171)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:117)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1158)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1182)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1163)
...

After a bit of a hunt through the ADS mailing lists I learned that this error is due to a problem with the Mozilla XULRunner version on my system.

In order to get ADS to run correctly I had to specify the version XULRunner it should run with manually:

./ApacheDirectoryStudio -vmargs -Dorg.eclipse.swt.browser.XULRunnerPath=/usr/lib/xulrunner/xulrunner-1.9.1

The original Mozilla bug is detailed here, and this solution for ADS found here.