Not able to set breakpoint in visual studio

Question

I am using Visual Studio 2013 and I am facing a weird issue from last few days. Whenever I try to set a break point, I get an error

\"The Following breakpoint can         


        

Answer 1

In my case, this was caused by a faulty merge of the .csproj contents, to be specific a ItemGroup contained a node which belonged in its own ItemGroup.