title: Visual Studio 2015 - ..package did not load correctly
body: <p>I've just installed vs2015 on a win10 VM and get a series of package did not load correctly errors. VisualBasicPackage, FileIndicatorPackage and so on.</p>
  
  <p>I found a previous question from VS2010 that sounds very similar, but no solution was provided.</p>
  
  <p>All projects have the same errors. I've installed VS2013 alongside it and it works perfectly, I also have my previous dev VM running 2013 on win 8.1 for the last 2 years with no issues, so it appears to be VS2015 specific.</p>
  
  <p>Any help with this would be appreciated</p>