NullPointerException when trying to execute 'Deploy as War' ?

Hello, I just started using the SoapUI Eclipse plugin. (Fedora 9 linux environment).

1) Create a project, using a wsdl to create mock service and testcases.
2) Select 'Deploy as War'
3) Select file path, include everything.
4) Immediately get a NullPointerException' error dialog, trace looks like this:

  java.lang.NullPointerException
  at java.io.File.(File.java:240)
  at com.eviware.soapui.tools.MockAsWar.prepareWarFile(MockAsWar.java:178)
  at com.eviware.soapui.tools.MockAsWar.access$000(MockAsWar.java:40)
  at com.eviware.soapui.tools.MockAsWar$1.construct(MockAsWar.java:85)
  at com.eviware.x.impl.swt.SwtProgressDialog$InternalRunnableWithProgress.run(SwtProgressDialog.java:138)
  at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)

This happens no matter what deploy settings I choose. Any ideas?
Thanks in advance.