Windows platforms
PIT Tiger build: j2re-1_5_0-fcs-bin-b99-windows-i586-09_sep_2003.exe

Tiger Java Web Start can not use JRE 1.3 if Java Control Panel is opened, application is hanging and it is running without problems if Java Control closed.

Steps to reproduce:
- istall j2re1.5.0
- install j2re1.3.1
- open Java Control Panel, make sure 1.3.1 jre is presented
- launch a jnlp app which explictly require JRE 1.3.1
http://sqe-jpi-07.sfbay.sun.com:8088/JavawsTest/javaversion/javaversion_1.3.jnlp for example.
- application will hang
- close Java Control Panel and run it again - everything working fine

Log:
socket connection probably reset by peer, resetting client
basic: Java part started
basic: jnlpx.jvm: C:\Program Files\JavaSoft\JRE\1.3.1\bin\javaw.exe
basic: jnlpx.splashport: 1868
basic: jnlpx.remove: false
basic: jnlpx.heapsize: NULL,NULL
basic: new Launcher:
<jnlp spec="1.0+" codebase="http://sqe-jpi-07.sfbay.sun.com:8088/JavawsTest/java
version/">
  <information>
    <title>Java Version Test</title>
    <vendor>Sun Microsystems, Inc.</vendor>
    <homepage href="http://sqe-jpi-07.sfbay.sun.com:8088/JavawsTest/javaversion/
homepage.html"/>
    <description>Java Version Test</description>
    <icon href="http://sqe-jpi-07.sfbay.sun.com:8088/JavawsTest/javaversion/imag
es/Button.jpg" kind="default"/>
    <offline-allowed/>
  </information>
  <resources>
    <j2se href="http://java.sun.com/products/autodl/j2se" version="1.3*"/>
    <jar href="http://sqe-jpi-07.sfbay.sun.com:8088/JavawsTest/javaversion/jar/j
avaversion.jar" download="eager" main="false"/>
  </resources>
  <application-desc main-class="javaversion"/>
</jnlp>
basic: Loaded descriptor from cache at: http://sqe-jpi-07.sfbay.sun.com:8088/Jav
awsTest/javaversion/jar/javaversion.jar
basic: LaunchDesc location: http://sqe-jpi-07.sfbay.sun.com:8088/JavawsTest/java
version/jar/javaversion.jar, version: null
basic: isCurrentRunningJREHeap: passed args: -1, -1
basic: JnlpxArgs is -1, -1
basic: LaunchSelection: findJRE: Match on current JRE
basic: Offline mode: false
basic: IsInCache: true
basic: forceUpdate: false
basic: Installed JRE: JREInfo for index 0:
    platform is: 1.3
    product is: 1.3.1
    location is: http://java.sun.com/products/autodl/j2se
    path is: C:\Program Files\JavaSoft\JRE\1.3.1\bin\javaw.exe
    osname is: Windows
    osarch is: x86
    enabled is: true
    registered is: true
    system is: false

basic: IsInstaller: false
java.lang.NoSuchMethodError
        at com.sun.deploy.si.SingleInstanceImpl.getSingleInstanceFilePrefix(Sing
leInstanceImpl.java:34)
        at com.sun.deploy.si.SingleInstanceManager.isServerRunning(SingleInstanc
eManager.java:34)
        at com.sun.javaws.Launcher.handleApplicationDesc(Unknown Source)
        at com.sun.javaws.Launcher.handleLaunchFile(Unknown Source)
        at com.sun.javaws.Launcher.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
###@###.### 2003-09-12