project converted to composite cant be loaded

I have soapUI pro 5.1.2
I have converted one of my projects into composite file.
When attempting to add the folder-level project to soapUIpro I see a red x on the project and an exception on the error log
exact steps:
1. take single file project, convert to composite
2. Save project
3. close soapUI pro
4. Open soapUI pro
5. See your project has red x on it, and error under error log
6. Try to add the project again, unsuccessful.


Mon Oct 27 11:13:28 EDT 2014:ERROR:com.eviware.soapui.support.SoapUIException: Failed to load project from file [file:/C:/...<bunch of folders>.../api-test/]
com.eviware.soapui.support.SoapUIException: Failed to load project from file [file:/C:/...<bunch of folders>.../api-test/]
at com.eviware.soapui.impl.wsdl.WsdlProjectPro.loadProject(SourceFile:321)
at com.eviware.soapui.impl.wsdl.WsdlProject.<init>(WsdlProject.java:220)
at com.eviware.soapui.impl.wsdl.WsdlProject.<init>(WsdlProject.java:201)
at com.eviware.soapui.impl.wsdl.WsdlProjectPro.<init>(SourceFile:170)
at com.eviware.soapui.impl.wsdl.WsdlProjectProFactory.createNew(SourceFile:36)
at com.eviware.soapui.impl.wsdl.WsdlProjectProFactory.createNew(SourceFile:16)
at com.eviware.soapui.impl.WorkspaceImpl.importProject(WorkspaceImpl.java:340)
at com.eviware.soapui.impl.actions.ProImportWsdlProjectAction.perform(SourceFile:43)
at com.eviware.soapui.impl.actions.ProImportWsdlProjectAction.perform(SourceFile:15)
at com.eviware.soapui.support.action.swing.SwingActionDelegate.actionPerformed(SwingActionDelegate.java:89)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.AbstractButton.doClick(Unknown Source)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(Unknown Source)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(Unknown Source)
at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at com.eviware.soapui.impl.support.loadsave.CompositeProjectSaver.a(SourceFile:782)
at com.eviware.soapui.impl.support.loadsave.CompositeProjectSaver.b(SourceFile:735)
at com.eviware.soapui.impl.support.loadsave.CompositeProjectSaver.b(SourceFile:728)
at com.eviware.soapui.impl.support.loadsave.CompositeProjectSaver.load(SourceFile:674)
at com.eviware.soapui.impl.support.wsdl.UrlWsdlLoaderPro.handleFile(SourceFile:27)
at com.eviware.soapui.impl.wsdl.support.wsdl.UrlWsdlLoader.load(UrlWsdlLoader.java:116)
at com.eviware.soapui.impl.wsdl.support.wsdl.UrlWsdlLoader.load(UrlWsdlLoader.java:96)
at com.eviware.soapui.impl.wsdl.WsdlProjectPro.loadProject(SourceFile:192)
... 48 more