PluginTestDlg.cpp:
added 'extern' to CMyScriptObject scripter declaration: I.E.
extern CMyScriptObject scripter

CustomPlugin.h:
Added these declarations:

typedef void (_cdecl *DoubleShortDouble) ( short , double );

extern OneShort           DoButton;     // void DoButton(code)
extern DoubleShort        GetDRO;       // Double GetDRO(code)
extern DoubleShortDouble  SetDRO;       // void SetDRO(short code, double value);
extern BoolShort          GetLED;       // bool GetLED(short code);
extern CSTRret            GetProName;   // CString GetProName()
extern VoidLPCSTR         Code;         // void Code("G0X10Y10");

