I've noticed a couple of anomalies like that between Oct 2001 and the current stuff - all they have to do is maintain backwards compatibility
The Core SDK download includes a current MSDN of the Win32 API. If your Oct 2001 MSDN came from a VC++ install, you'll still have to use it for help on CRT, MFC, ATL, the IDE, etc...
If you already knew that, shame on you for using Oct 2001 docs
So I'm not totally off-topic, here's the online reference bithub mentioned: GetPrivateProfileString()
And post your actual code skywind so we can inspect it.