I have my development and my production environment, in both of them the solution worked well.
In my development environment, I made a change to the solution using a class of the .NET Framework 4.5, and in the Visual Studio 2013 works fine.
When I made that change in my other environment, which is using Visual Studio 2010, the solution won't load anymore, it just keep crashing at the loading.
I commented the lines that I think cause the problem with NP++, and now the solution loads, but when I try to open a file, it just crash again.
I installed .NET Framework 4.5.2 but still nothing, any idea?