cc1plus.exe: error: unrecognized command line option "-Wfatal-errors"
Enable full compiler logging (see my sig),
re-compile the program and post the full compiler log here, please.
In addition: Please open a command prompt, go to the folder where your compiler is installed (probably in the bin sub-folder) and type:
g++ --version...and post the full output here, too.
Furthermore: Make sure you don't have another compiler in your PATH that actually is being called.
