Errors installing 5.1

While attempting to install 5.1 over 5.0 on a W2K-SP3 machine, I see the
following error within the C:\Program files\IBM\Websphere Studio\Site
Developer\v5.1\logs\install.log file:

(Nov 3, 2003 7:15:35 PM), Setup.product.install,
com.ibm.mby.install.beans.InstallArchiveSet, err, An error occurred and
product installation failed.  Look at the log file C:\Program
Files\IBM\WebSphere Studio\Site Developer\v5.1\logs\install.log for details.
(Nov 3, 2003 7:15:35 PM), Setup.product.install,
com.ibm.mby.install.beans.InstallArchiveSet, err, ProductException: (error
code = 601; message="err"; additional data = [java.util.zip.ZipException:
too many length or distance symbols])
STACK_TRACE: 12
ProductException: (error code = 601; message="err"; additional data =
[java.util.zip.ZipException: too many length or distance symbols])
        at com.ibm.mby.install.beans.InstallArchiveSet.install(Unknown Source)
        at
com.installshield.product.service.product.PureJavaProductServiceImpl.install
ProductAction(PureJavaProductServiceImpl.java:1916)
        at
com.installshield.product.service.product.PureJavaProductServiceImpl$Install
Product.getResultForProductAction(PureJavaProductServiceImpl.java:5150)
        at
com.installshield.product.service.product.InstallableObjectVisitor.visitComp
onent(InstallableObjectVisitor.java:369)
        at
com.installshield.product.service.product.InstallableObjectVisitor.visitInst
allableComponents(InstallableObjectVisitor.java:333)
        at
com.installshield.product.service.product.InstallableObjectVisitor.visitProd
uctBeans(InstallableObjectVisitor.java:133)
        at
com.installshield.product.service.product.PureJavaProductServiceImpl$Install
Product.install(PureJavaProductServiceImpl.java:4533)
        at
com.installshield.product.service.product.PureJavaProductServiceImpl$Install
er.execute(PureJavaProductServiceImpl.java:3728)
        at
com.installshield.wizard.service.AsynchronousOperation.run(AsynchronousOpera
tion.java:40)
        at java.lang.Thread.run(Thread.java:566)

(Nov 3, 2003 7:15:35 PM), Setup.product.install,
com.installshield.product.service.product.PureJavaProductServiceImpl$Install
Product, err, An error occurred and product uninstallation failed.  Look at
the log file C:\Program Files\IBM\WebSphere Studio\Site
Developer\v5.1\logs\install.log for details.
(Nov 3, 2003 7:15:35 PM), Setup.product.install,
com.ibm.mby.install.beans.InstallArchiveSet, err,
java.lang.NullPointerException
STACK_TRACE: 12
java.lang.NullPointerException
        at com.ibm.mby.install.beans.InstallArchiveSet.uninstall(Unknown Source)
        at
com.installshield.product.service.product.PureJavaProductServiceImpl.uninsta
llProductAction(PureJavaProductServiceImpl.java:1947)
        at
com.installshield.product.service.product.PureJavaProductServiceImpl$Install
Product.processActionsFailed(PureJavaProductServiceImpl.java:5093)
        at
com.installshield.product.service.product.InstallableObjectVisitor.visitComp
onent(InstallableObjectVisitor.java:374)
        at
com.installshield.product.service.product.InstallableObjectVisitor.visitInst
allableComponents(InstallableObjectVisitor.java:333)
        at
com.installshield.product.service.product.InstallableObjectVisitor.visitProd
uctBeans(InstallableObjectVisitor.java:133)
        at
com.installshield.product.service.product.PureJavaProductServiceImpl$Install
Product.install(PureJavaProductServiceImpl.java:4533)
        at
com.installshield.product.service.product.PureJavaProductServiceImpl$Install
er.execute(PureJavaProductServiceImpl.java:3728)
        at
com.installshield.wizard.service.AsynchronousOperation.run(AsynchronousOpera
tion.java:40)
        at java.lang.Thread.run(Thread.java:566)


Do any of our helpful developers at IBM have any suggestions regarding what
to do next?


Regards,

John Taylor