An update :
The previous message was written in my office, where I tried today to install the MDG.
I've returned to my home, where I've installed both EA 6 & MDG for the vs 2005 this last Friday (December 30th), and tried to open the solution which I've worked on Friday, and to my surprise - I got the same message !!
I've also received the following error message :
System.ArgumentException: Item has already been added. Key in dictionary: '1595826322' Key being added: '1595826322'
at System.Collections.Hashtable.Insert(Object key, Object nvalue, Boolean add)
at System.Collections.Hashtable.Add(Object key, Object value)
at Microsoft.VisualStudio.Shell.Package.CreateToolWindow(Type toolWindowType, Int32 id, ProvideToolWindowAttribute tool)
at Microsoft.VisualStudio.Shell.Package.CreateToolWindow(Type toolWindowType, Int32 id)
at Microsoft.VisualStudio.Shell.Package.FindToolWindow(Type toolWindowType, Int32 id, Boolean create, ProvideToolWindowAttribute tool)
at Microsoft.VisualStudio.Shell.Package.FindToolWindow(Type toolWindowType, Int32 id, Boolean create)
at Vsip.VSIntegrate.s.g()