Issues with installing JavaFX on first use

Jose Martinez jmartine_1026 at
Tue May 1 07:08:27 PDT 2012

I am having problems myself with the brickbreaker link.

Running Windows XP with JRE 6u29 and JRE 7u29 installed and JFX 2.0.3..... I purposefully did not upgrade to latest to see what average user would experience.

1)  Click on
2)  Downloaded JNLP and clicked on it.  Java 7 icon popped up, then got the following error msg "Unable to launch the application."
3)  Clicking on details showed the following exception....

MissingFieldException[ The following required field is missing from the launch file: <application-desc>|<applet-desc>]
at com.sun.javaws.Launcher.prepareLaunchFile(Unknown Source)
at com.sun.javaws.Launcher.prepareAllResources(Unknown Source)
at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
at com.sun.javaws.Launcher.launch(Unknown Source)
at com.sun.javaws.Main.launchApp(Unknown Source)
at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
at com.sun.javaws.Main$ Source)
at Source)


 From: Joe McGlynn <joe.mcglynn at>
To: Anthony Vanelverdinghe <anthony.vanelverdinghe at> 
Cc: openjfx-dev at 
Sent: Tuesday, May 1, 2012 9:32 AM
Subject: Re: Issues with installing JavaFX on first use
Anthony, thanks for the detailed report, we will look into that today.

Joe McGlynn

On May 1, 2012, at 5:02 AM, Anthony Vanelverdinghe wrote:

> Hello to all
> I 've encountered 2 issues with installing JavaFX on first use.
> Environment:
> OS: Windows Vista Business SP2 32-bit
> Java: Java SE 7u4 JRE (Windows x86 Offline (32-bit)) as downloaded from here ( )
> no other JDK or JRE is installed
> Following are the steps to reproduce:
> download & unzip the JavaFX samples from the Oracle site ( )
> Problem 1: open BrickBreaker.jnlp. Now an error comes up saying:
> C:\Users\Anthony\javafx-windows-i586__Vlatest.exe is not a valid Win32 application.
> The problem, I believe, is the following:
> BrickBreaker.jnlp refers to 
> which in turn refers to 
> this jar contains a class JavaFXRuntimeInstaller, which contains the download locations for the JavaFX installers:
> private static final String DEFAULT_I586_URL = ""; 
> private static final String DEFAULT_X64_URL = ""; 
> using the first URL to continue my explanation:
> redirects with http code 302 to: 
> which in turn redirects with http code 302 to: 
> so JavaFXRuntimeInstaller basically downloads the file at DEFAULT_I586_URL to a local file & executes the local file, but:
> by default redirects are followed, unless it goes from http to https or vice versa (see, so JavaFXRuntimeInstaller simply downloads the contents of (i.e. nothing) & then executes the empty downloaded file. This results in the error above saying the file is not a valid Win32 application.
> So the fix should be as simple as eliminating the redirect to a https URL in the scenario above.
> Problem 2: open BrickBreaker.html & click the Webstart link, now the JavaFX 2.0.3 installer is downloaded, instead of the expected JavaFX 2.1.0 one (note that trying to start the embedded JavaFX application does download the JavaFX 2.1.0 installer). I have absolutely no clue why this happens, especially since the encoded jnlp_content of the Webstart link is exactly the same as both the encoded jnlp_content of the embedded JavaFX application & the external BrickBreaker.jnlp file.
> Best regards
>  Anthony Vanelverdinghe

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