SQL Data Modeler - Startup Problem

Hi
I've created a Relational Model with Oracle SQL Developer Data Modeler, with a few tables, and everything was working ok.
Yesterday I made some changes to the model, added columns and another table, saved the model and closed the Data Modeler.
Today - when I tried to open the Model, I only get an error "Some objects are not loaded correctly. See the log file for details"
The log at the bottom of the Data Modeler only shows: "Open Design: "nameof model"" and no details of what went wrong. No other details is provided, and as far as i can see - and now I can't view the model at all.
Any ideas how to find the problem/ fix it in order to get the created Model back?
Thanks
Coenraad

Hi Philip
Thanks, I found the log file there. I have cleared the log file, and when I tried to open the model again, it created the below information, any ideas what could be wrong?
2009-09-10 21:05:33,531 [main] INFO ApplicationView - Oracle SQL Developer Data Modeler Version: 2.0.0 Build: 570
2009-09-10 21:05:39,828 [main] WARN AbstractXMLReader - There is no file with default domains (path: domains name: defaultdomains)
2009-09-10 21:05:55,296 [Thread-3] ERROR AbstractXMLReader - problem parsing document for:a-erd2
AbstractXMLReader.parse:
oracle.xml.parser.v2.XMLParseException: Expected name instead of >.
     at oracle.xml.parser.v2.XMLError.flushErrors1(XMLError.java:320)
     at oracle.xml.parser.v2.XMLReader.scanNameChars(XMLReader.java:1095)
     at oracle.xml.parser.v2.XMLReader.scanQName(XMLReader.java:1835)
     at oracle.xml.parser.v2.NonValidatingParser.parseElement(NonValidatingParser.java:1264)
     at oracle.xml.parser.v2.NonValidatingParser.parseRootElement(NonValidatingParser.java:324)
     at oracle.xml.parser.v2.NonValidatingParser.parseDocument(NonValidatingParser.java:291)
     at oracle.xml.parser.v2.XMLParser.parse(XMLParser.java:200)
     at oracle.xml.jaxp.JXDocumentBuilder.parse(JXDocumentBuilder.java:155)
     at oracle.dbtools.crest.model.persistence.xml.AbstractXMLReader.parse(Unknown Source)
     at oracle.dbtools.crest.model.persistence.xml.AbstractXMLReader.recreateObject(Unknown Source)
     at oracle.dbtools.crest.model.persistence.xml.AbstractXMLReader.handleRecreateObject(Unknown Source)
     at oracle.dbtools.crest.model.persistence.XMLPersistenceManager.read(Unknown Source)
     at oracle.dbtools.crest.model.design.Design.openDesign(Unknown Source)
     at oracle.dbtools.crest.swingui.ControllerApplication$Recent$1.run(Unknown Source)
2009-09-10 21:05:55,296 [Thread-3] ERROR AbstractXMLReader - Error recreating object from XML: a-erd2
2009-09-10 21:05:55,703 [Thread-3] ERROR FileManager - getDataInputStream: Can not read data
java.io.FileNotFoundException: C:\My_Home\Datamodeler\a-erd2\pm\B90BA2ED-3D5F-6690-8413-DE9492D76B23.xml (The system cannot find the file specified)
     at java.io.FileInputStream.open(Native Method)
     at java.io.FileInputStream.<init>(FileInputStream.java:106)
     at oracle.dbtools.crest.model.persistence.FileManager.getDataInputStream(Unknown Source)
     at oracle.dbtools.crest.model.persistence.FileManager.getDataInputStreamWithoutExtension(Unknown Source)
     at oracle.dbtools.crest.model.persistence.XMLPersistenceManager.getInputStreamFor(Unknown Source)
     at oracle.dbtools.crest.model.persistence.xml.AbstractXMLReader.getInputStreamFor(Unknown Source)
     at oracle.dbtools.crest.model.persistence.xml.AbstractXMLReader.recreateDesign(Unknown Source)
     at oracle.dbtools.crest.model.design.process.ProcessModel.load(Unknown Source)
     at oracle.dbtools.crest.model.design.Design.openDesign(Unknown Source)
     at oracle.dbtools.crest.swingui.ControllerApplication$Recent$1.run(Unknown Source)
2009-09-10 21:05:55,703 [Thread-3] ERROR AbstractXMLReader - Data inputstream is null (path: a-erd2/pm name: B90BA2ED-3D5F-6690-8413-DE9492D76B23)

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