Why does select source for a SQL Schema Comparison cause VS2012 to crash?

Question

For seemingly no reason, choosing SQL > Schema Compare > New Schema Comparison and then attempting to "select source" causes Visual Studio 2012 to crash. (It has been working as expected for months).

Are there any possible fixes besides trying to re-install?

Note: trying to debug the crash in another instance of Visual Studio shows an exception in

Application: devenv.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.Security.Cryptography.CryptographicException
Stack:
   at Microsoft.VisualStudio.Data.DataProtection.DecryptString(System.String)
   at Microsoft.VisualStudio.Data.Tools.Design.Core.Common.SqlClient.SqlUtils.DecryptConnectionString(System.String)
   at Microsoft.VisualStudio.Data.Tools.Design.Core.Common.SqlClient.ServerExplorerConnection.get_DisplayNameWithDatabase()
   at Microsoft.VisualStudio.Data.Tools.Package.UI.DatabaseConnectionControl+ConnectionItem.Initialize(Microsoft.VisualStudio.Data.Tools.Design.Core.Common.SqlClient.ServerExplorerConnection)
   at Microsoft.VisualStudio.Data.Tools.Package.UI.DatabaseConnectionControl.PopulateDatabaseCombo()
   at Microsoft.VisualStudio.Data.Tools.Package.UI.DatabaseConnectionControl.DatabaseConnectionControl_Load(System.Object, System.EventArgs)

Answer 1

Attempting to follow the information posted here, I did check to see which registry entries were being accessed. Removing everything found under HKCU\Software\Microsoft\VisualStudio\11.0\SSDT\ConnectionMruList did the trick.