I just checked: after opening the "circle" project, I found the exact same situation (no debugging information). However, after setting "Debug" for "Debugging information", and rebuilding the project, everything wokrs fine.
To change this option, select in the "Project Windows" the "Circle" application, then (popup menu) run "Properties" for the application, then GCC| Compiler Output.
Note that if you select a single node (a C source file), the setting will be change only for the selected node.