I experienced an error in the tutorial at:
Cprogramming.com Tutorial: Setting up Code::Blocks and MINGW, A Free C and C++ Compiler, on Windows
Specifically Step 3 did not happen.
As such I got an "invalid compiler" error when trying to build example.
It was corrected by setting the "toolchain" setting, but only after guidance on the C::B forums.
Is my system (XP C::B 8.02) somehow anomalous?