Visual Studio 2012 not compiling anymore after changes made

Question

i recently installed VS 12 Service Pack 1. Since then, i noticed Visual Studio doesn't compile my project on start if changes were made.

Normally if you start (debugging) a project which has some changes, it recompiles it and starts then. But now, i always get debugging errors like "this breakpoint can´t be reached, because the source code is unequal to the runtime code" or whatever.

It´s annoying to recompile it manually always before starting - I always forget that :-/

Is there any option to fix this?

Answer 1

Can you check if the build on run option is set?

You will find it under Tools->Options->Project and Solutions->Build and Run.

I dont have a good answer as to why this would have been flipped just via installing the update1.