PDM/Link upgrade 8 -10 WinDU issues

Hello all,

We are getting ready to upgrade our 8.0 system to 10 and are having some issues with windu it runs fine on our production environment but it will not run on our development environment and I am at a loss. Was wondering if anyone might have some suggestions as to what the following error means:

Wed 1/18/12 11:03:01: main: *ERROR*: An unexpected error occurred
Wed 1/18/12 11:03:01: main: *ERROR*: java.lang.NullPointerException
Wed 1/18/12 11:03:01: main: *ERROR*: at java.util.Hashtable.put(Hashtable.java:393)
Wed 1/18/12 11:03:01: main: *ERROR*: at java.util.Properties.setProperty(Properties.java:102)
Wed 1/18/12 11:03:01: main: *ERROR*: at java.lang.System.setProperty(System.java:656)
Wed 1/18/12 11:03:01: main: *ERROR*: at com.ptc.windchill.upgrade.ius.AbstractContext.copyWtToSystemProperties(AbstractContext.java:258)
Wed 1/18/12 11:03:01: main: *ERROR*: at com.ptc.windchill.upgrade.ius.AbstractContext.resetServerVariables(AbstractContext.java:231)
Wed 1/18/12 11:03:01: main: *ERROR*: at com.ptc.windchill.upgrade.ius.AbstractContext.<init>(AbstractContext.java:83)
Wed 1/18/12 11:03:01: main: *ERROR*: at com.ptc.windchill.windu.WinduContext.<init>(WinduContext.java:29)
Wed 1/18/12 11:03:01: main: *ERROR*: at com.ptc.windchill.windu.Windu.main(Windu.java:42)
Wed 1/18/12 11:03:01: main: *ERROR*:

Thanks,

Andy Ley