[Issue 6394] InvalidObjectException with Save Project

http://argouml.tigris.org/issues/show_bug.cgi?id=6394



User bobtarling changed the following:

                What    |Old value                 |New value
================================================================================
                 Summary|InvalidObjectException wit|InvalidObjectException wit
                        |h Save Project            |h Save Project
--------------------------------------------------------------------------------




------- Additional comments from [email protected] Sat Dec 10 09:48:26 -0800 2011 -------
It looks like the failure at point (3) happens too far in our load process when 
we have already removed the current project but not yet created a new one.

I notice that after this the model in the tree shows as *deleted*

We should check if the file being loaded actually exists at an earlier stage in 
the process.

Even then it might be wise to make sure our exception handling can restore the 
previous project if possible or at the very least have a new blank project if 
this exception still occurs.

This problem hinges on the fact that we can only have one project in memory in 
ArgoUML and there are complications in managing the transition when a new 
project is loaded.

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