After installing Community Edition of VS2013 with some additional packages i've noticed that my VS2012 starts failing to start with message like "The 'HDIProjectPackage' package did not load correctly. The problem may have been caused by a configuration change or by the installation of another extension. You can get more information by examining the file 'C:\Users\************\AppData\Roaming\Microsoft\VisualStudio\11.0\ActivityLog.xml'."

Activity log shows

SetSite failed for package [HDIProjectPackage]
End package load [HDIProjectPackage]
{665BA479-E656-4485-9097-7CE2A22A90F2} (just to let Google to find this page)

Google knows nothing about HDIProjectPackage. I dont know how to fix errors with VS2012. I'm stuck!
After 24 hours of thinking and meditation (and several reinstalls of both VS2012 and VS2013) I've found that the problem was with "Microsoft Azure HDInsight Tools for Visual Studio" which I've installed via Web Platform Installer
HDIProjectPackage->HDInsight, looks similar, right?
So I uninstalled "Microsoft Azure HDInsight Tools for Visual Studio" and my VS2012 now alive!!!!!
And I can continue to develop next release of SqlCodeGuard with such nice features like, say, preprocessor commands to disable specific issues in particular scripts (or even - part of script)