Reply To: Can't save SIM 3 project with SIM 4

I have a whole project made with SIM v3.x. I can open it with SIM 4.x, I can make modifications but I can't save it. Here are the error details :

System.NullReferenceException: Object reference not set to an instance of an object.

at SoftwareIdeasModeler.ProjectXml.SimXmlWriter.Save(String fileName)

at SoftwareIdeasModeler.MainForm.SaveToFile(String filename)

at SoftwareIdeasModeler.MainForm.SaveFile()

at SoftwareIdeasModeler.MainForm.saveToolStripMenuItem_Click(Object sender, EventArgs e)

at System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e)

at System.Windows.Forms.ToolStripMenuItem.OnClick(EventArgs e)

at System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e)

at System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e, ToolStripItemEventType met)

at System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e, ToolStripItemEventType met)

at System.Windows.Forms.ToolStripMenuItem.ProcessCmdKey(Message& m, Keys keyData)

at System.Windows.Forms.ToolStripManager.ProcessShortcut(Message& m, Keys shortcut)

at System.Windows.Forms.ToolStripManager.ProcessCmdKey(Message& m, Keys keyData)

at System.Windows.Forms.ContainerControl.ProcessCmdKey(Message& msg, Keys keyData)

at System.Windows.Forms.Form.ProcessCmdKey(Message& msg, Keys keyData)

at System.Windows.Forms.Control.ProcessCmdKey(Message& msg, Keys keyData)

at System.Windows.Forms.Control.ProcessCmdKey(Message& msg, Keys keyData)

at System.Windows.Forms.ContainerControl.ProcessCmdKey(Message& msg, Keys keyData)

at System.Windows.Forms.Form.ProcessCmdKey(Message& msg, Keys keyData)

at System.Windows.Forms.Control.ProcessCmdKey(Message& msg, Keys keyData)

at System.Windows.Forms.ContainerControl.ProcessCmdKey(Message& msg, Keys keyData)

at SoftwareIdeasModeler.SimDiagramControl.ProcessCmdKey(Message& msg, Keys keyData)

at System.Windows.Forms.Control.PreProcessMessage(Message& msg)

at System.Windows.Forms.Control.PreProcessControlMessageInternal(Control target, Message& msg)

at System.Windows.Forms.Application.ThreadContext.PreTranslateMessage(MSG& msg)

olivier 14 October 2010 15:59:25