Greetings,
First: I am a user not a developer and have very limited understanding of JDK, JRE, and Java Web Start. I just want to figure out how to get these applications to run. I suspect it is a JAVA bug that is peculiar to my particular Windows XP-SP2 system configuration.
My Problem: When trying to run (two different/independent applications) java web start applications, I get the following error.
The application has requested a version of the JRE (version 1.4) that currently is not locally installed. Java Web Start is unable to automatically download and install the requested version. This JRE must be installed manually.+
For reference, the Launch file is:
<?xml version="1.0" encoding="utf-8"?>
<!-- JNLP to launch MOViewer application -->
<jnlp
codebase="http://gnlewis.ic.edu/~webmo/webmo/java"
spec="1.0+" >
<information>
<title>MOViewer</title>
<vendor>WebMO, LLC</vendor>
<description>MOViewer application</description>
<description kind="short">A Java interface for viewing molecular orbitals.</description>
<homepage href="www.webmo.net"></homepage>
<icon href="images/splash.gif"/>
<offline-allowed/>
</information>
<security>
<all-permissions/>
</security>
<resources>
<j2se version="1.4+"/>
<jar href="MOViewer.jar"/>
<jar href="Jmol.jar"/>
</resources>
<application-desc main-class="net.webmo.moviewer.MOViewerFrame"/>
</jnlp>
I should note that the required JRE is installed. I have various builds of versions 1.4 through 1.6 installed on my laptop. And my gut tells me that it is not the JNLP file that is the problem. I believe it to be a problem (bug) with java, JRE, or javaws that shows up with my particular PC configuration (which I did not set up but don't believe is particularly unusual).
Another interesting and possibly related problem, is that when I goto the java application control panel (Start->Control Panel->Java) and select the "Java" tab, there is a lower section for "Java Application Runtime Settings". If I slect the "View" button a screen appears with two tabs: User and System. There are no entries under either tab. I can "Add" an entry under the user tab (and find the path to the correct java version etc.) and "Apply" the settings. I cannot add anyting under the system tab (even the my user ID is part of the administrator group and should have full system access). Even after applying this change, I still cannot run the java web start application. If I close the control panel and reopen it, the JRE path that I "added" is no longer listed under "View". This seems odd behavior. It is as if there is some configuration file or environment variable somewhere that is not getting set/saved.
Please....is there anyone that has seen this problem and has a suggested fix. I have googled this problem and found a very few seemingly relevant pieces of info but it seemed more of a developer issue and I do have the background to understand the proposed fixes.
Thanks, in advance, for your assistance.
--Clay