OpenProj - Project Management

I've been trying to open a project created in Gnome Planner.

System Info: I'm using the debian beta 3 package on Ubuntu 7.04, and I'm
using the current ubuntu package for java 1.6 to run openproj.

The problem(s):
Firstly, the .planner file doesn't show up in the "open file" dialog unless
I select file type "all files" - the filter for *.planner files doesn't
pick it up. The file is called "project_plan_lmc4.planner". I can attach it
if necessary - I'd rather remove a few bits of info from it first though!

Secondly, when I select this file and click "Open", the interface tells me
it's loading, but the progress bar dialog just sits there doing nothing
forever. The interface is not dead, and the program hasn't crashed -
everything else continues to work fine (even before clicking on "Cancel" in
the progress dialog box, which is possibly another bug?)

When running the app from a shell, I get the following log messages printed
out, finishing with the error stack trace:

rebecca@rebecca-laptop$ JAVA_HOME=/usr/lib/jvm/java-6-sun/ openproj
05-Sep-2007 16:13:02 com.projity.contrib.util.Log info
INFO: Reading configuration from
jar:file:/usr/share/openproj/openproj.jar!/com/projity/configuration/config
uration.xml Wed Sep 05 16:13:02 GMT 2007
05-Sep-2007 16:13:02 com.projity.contrib.util.Log info
INFO: Done reading configuration from
jar:file:/usr/share/openproj/openproj.jar!/com/projity/configuration/config
uration.xml Wed Sep 05 16:13:02 GMT 2007
05-Sep-2007 16:13:02 com.projity.contrib.util.Log info
INFO: Reading configuration from
jar:file:/usr/share/openproj/openproj.jar!/com/projity/configuration/view.x
ml Wed Sep 05 16:13:02 GMT 2007
05-Sep-2007 16:13:03 com.projity.contrib.util.Log info
INFO: Done reading configuration from
jar:file:/usr/share/openproj/openproj.jar!/com/projity/configuration/view.x
ml Wed Sep 05 16:13:03 GMT 2007
05-Sep-2007 16:13:34 com.projity.contrib.util.Log info
INFO: doing file import
Exception in thread "loadProject" java.lang.InternalError:
com.sun.msv.datatype.xsd.XSDatatypeImpl; local class incompatible: stream
classdesc serialVersionUID = 1, local class serialVersionUID =
4450432194318937500
at
com.sun.xml.bind.unmarshaller.DatatypeDeserializer.deserialize(DatatypeDese
rializer.java:45)
at
net.sf.mpxj.planner.schema.impl.TaskImpl.<clinit>(TaskImpl.java:32)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAcce
ssorImpl.java:39)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstru
ctorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:355)
at java.lang.Class.newInstance(Class.java:308)
at
net.sf.mpxj.planner.schema.impl.runtime.AbstractUnmarshallingEventHandlerIm
pl.spawnChild(AbstractUnmarshallingEventHandlerImpl.java:201)
at
net.sf.mpxj.planner.schema.impl.runtime.AbstractUnmarshallingEventHandlerIm
pl.spawnChildFromEnterElement(AbstractUnmarshallingEventHandlerImpl.java:21
5)
at
net.sf.mpxj.planner.schema.impl.TasksImpl$Unmarshaller.enterElement(TasksIm
pl.java:153)
at
net.sf.mpxj.planner.schema.impl.runtime.SAXUnmarshallerHandlerImpl.startEle
ment(SAXUnmarshallerHandlerImpl.java:125)
at
org.xml.sax.helpers.XMLFilterImpl.startElement(XMLFilterImpl.java:527)
at
com.sun.xml.bind.unmarshaller.InterningXMLReader.startElement(InterningXMLR
eader.java:89)
at
com.sun.xml.bind.unmarshaller.DOMScanner.visit(DOMScanner.java:192)
at
com.sun.xml.bind.unmarshaller.DOMScanner.visit(DOMScanner.java:235)
at
com.sun.xml.bind.unmarshaller.DOMScanner.visit(DOMScanner.java:198)
at
com.sun.xml.bind.unmarshaller.DOMScanner.visit(DOMScanner.java:235)
at
com.sun.xml.bind.unmarshaller.DOMScanner.visit(DOMScanner.java:198)
at
com.sun.xml.bind.unmarshaller.DOMScanner.parse(DOMScanner.java:87)
at
net.sf.mpxj.planner.schema.impl.runtime.UnmarshallerImpl.unmarshal(Unmarsha
llerImpl.java:168)
at net.sf.mpxj.planner.PlannerReader.read(PlannerReader.java:114)
at com.projity.exchange.MicrosoftImporter$1.run(Unknown Source)
at com.projity.job.Job$InternalRunnable.run(Unknown Source)
at com.projity.job.Job.runSwing(Unknown Source)
at com.projity.job.Job.runThread(Unknown Source)
at com.projity.job.Job.run(Unknown Source)
at com.projity.job.Job.run(Unknown Source)