visual studio 2012 - Why does select source for a SQL Schema Comparison cause VS2012 to crash? -

For instance, SQL & gt; Compare schema & gt; Visual Studio 2012 causes crash due to new schema comparison and then "attempting to select the source". Apart from trying to re-establish any possible solution there (hopefully for months it has been worked out)

Note: ? View an example of studio accident trying to debug shows an exception

  application: Devenvkexe Framework Version: v4.0.30319 Description: The process of a non-action Was ended due to the exception. Exception information: System.Security.Cryptography.CryptographicException ads: Microsoft.VisualStudio.Data.DataProtection.DecryptString (System.String) (System on Microsoft.VisualStudio.Data.Tools.Design.Core.Common.SqlClient.SqlUtils.DecryptConnectionString. Microsoft.VisualStudio.Data.Tools.Package.UI.DatabaseConnectionControl + Knekshnitm string) on ​​Microsoft.VisualStudio.Data.Tools.Design.Core.Common.SqlClient.ServerExplorerConnection.get_DisplayNameWithDatabase (). Start Microsoft.VisualStudio.Data.Tools.Package.UI.DatabaseConnectionControl.DatabaseConnectionControl_Load on (Microsoft.VisualStudio.Data.Tools Microsoft.VisualStudio.Data.Tools.Package.UI.DatabaseConnectionControl.PopulateDatabaseCombo () (System. Object, System. EventArgs)    
  "itemprop =" text "> 
 After trying to follow the information, I see was checked which was accessible registry entries.  HKCU \ Software \ Microsoft \ VisualStudio \ 11.0 \ SSDT \ ConnectionMruList  is found under remove everything.