GetPin not working

As a new user to GraphEditPlus, I have asked GEP to render a wave file and it built a very simple graph
using 'WaveParser', and plays the file fine within GEP.
I generate the C++ code and import it into Borland C++ builder (console app)

I need to change the (deprecated) POSIX wcsicmp to _wcsicmp to enable compiling.

When run I get the output:

Building graph...
Pin not found!
Pin not found!
Error 80004003: Cant connect FileSource (Async.) and Wave Parser
Invalid pointer

When GetPin is called looking for 'input pin' of the WaveParser, only one pin is tested,
but pinfo.achName is empty (""). (Similarly when looking for "Output" on the FileSourceAsync).

I don't think that the cange from the POSIX function is the issue, as when I inspect pinfo.achName
I don't see the expected name.

What should I try?

CSD