When debugging ASP.NET MVC app, breakpoints are not hit

Question

When trying to debug a ASP.NET MVC app, the breakpoints in my controllers arent getting hit. When entering debug mode they just show an empty red circle with a warning trian

Answer 1

Make sure that your compilation framework version is the same as your project's compilation framework.. I ran into this and it was because the project was being compiled as 4.5 and the compilation attrib in the web config was trying to debug it as 4.5.1.