Installing WDSCI 5.1 on WinXP a problem? "Fatal Error: Unable to locate matching org.eclipse.core.runtime plug-in."

Hi all, 
I've recently tried to install WDSCI 5.1 on my home PC and after installing and 
trying to bring up the Development Studio Client it says that it's completing 
the install, then I get a error msg stating, "problems during startup. Check 
the ".log" in the metadata directory of your workspace". Has anyone had this 
problem? If so, I'd sure appreciate some help correcting it. I'm running on 
WinXP, connecting to the host 400 via F5 Network Access. I'm hoping that maybe 
IBM can answer this one for me. I've uninstalled and re-installed the software 
twice, hoping that it might take care of the problem. 
The log file had the following info: 
!SESSION ----------------------------------------------------------------------
!ENTRY org.eclipse.core.launcher 4 0 Oct 30, 2004 21:25:43.920
!MESSAGE Exception launching the Eclipse Platform:
!STACK
java.lang.reflect.InvocationTargetException: java.lang.RuntimeException: Fatal 
Error: Unable to locate matching org.eclipse.core.runtime plug-in.
at java.lang.Throwable.<init>(Throwable.java:54)
at java.lang.Throwable.<init>(Throwable.java:68)
at 
org.eclipse.core.internal.boot.PlatformConfiguration.locateDefaultPlugins(PlatformConfiguration.java:2264)
at 
org.eclipse.core.internal.boot.PlatformConfiguration.<init>(PlatformConfiguration.java:903)
at 
org.eclipse.core.internal.boot.PlatformConfiguration.startup(PlatformConfiguration.java:1368)
at 
org.eclipse.core.internal.boot.InternalBootLoader.initialize(InternalBootLoader.java:582)
at 
org.eclipse.core.internal.boot.InternalBootLoader.startup(InternalBootLoader.java:1035)
at 
org.eclipse.core.internal.boot.InternalBootLoader.run(InternalBootLoader.java:838)
at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461)
at java.lang.reflect.AccessibleObject.invokeL(AccessibleObject.java:207)
at java.lang.reflect.Method.invoke(Method.java:271)
at org.eclipse.core.launcher.Main.basicRun(Main.java:291)
at org.eclipse.core.launcher.Main.run(Main.java:747)
at org.eclipse.core.launcher.Main.main(Main.java:583)
Thanks for the help!
Chris