With VS2013 Pro I am not able to use "Edit and Continue" when debugging an MFC program. I created a new MFC project to test.

OS is Windows 7 64-bit and I'm running Visual Studio 2013 12.0.30110.00 Update1.

Under `Tools->Options->Debugging->Edit and Continue` I have `Enable Edit and Continue` checked. I have unchecked it and checked it, but whenever I modify the code while debugging I get the following message:

> 
> The source file has changed. It no longer matches the version of the file used to build the application being debugged.
> 
> 
> 

Basically I haven't changed any settings except for the tab sizes and I've set the keyboard mapping scheme to VC6.

**What setting am I missing to enable edit and continue?**