[Help] Engine Trace Problem topic

So I have this:

Code:

---

struct Ray_t
{
    Vector  m_Start;    // starting point, centered within the extents
    Vector  m_Delta;    // direction + length of the ray
    Vector  m_StartOffset;    // Add this to m_Start to get the actual ray start
    Vector  m_Extents;    // Describes an axis aligned box extruded along a ray
    bool    m_IsRay;    // are the extents zero?
    bool    m_IsSwept;    // is delta != 0?

    void Init( Vector const& start, Vector const& end )
    {
        Assert( &end );
        VectorSubtract( end, start, m_Delta );

        m_IsSwept = (m_Delta.LengthSqr() != 0);

        VectorClear( m_Extents );
        m_IsRay = true;

        // Offset m_Start to be in the center of the box...
        VectorClear( m_StartOffset );
        VectorCopy( start, m_Start );
    }


private:
};

class CBaseTrace
{
    public:

    bool            allsolid;                // if true, plane is not valid
    CBaseTrace() {}

private:
    // No copy constructors allowed
    CBaseTrace(const CBaseTrace& vOther);
};

class CGameTrace : CBaseTrace
{
public:
        CGameTrace() {}
        CBaseEntity *m_pEnt;
private:
    // No copy constructors allowed
    CGameTrace(const CGameTrace& vOther);
};

typedef CGameTrace trace_t;

class ITraceFilter
{
public:
};

class IEngineTrace
{
public:
    void TraceRay( const Ray_t &ray, unsigned int fMask, ITraceFilter *pTraceFilter,trace_t *pTrace )
    {
        typedef void ( __thiscall* OriginalFn )( PVOID, const Ray_t&, unsigned int, ITraceFilter *, trace_t* );
        getvfunc<OriginalFn>( this, 5 )( this, ray, fMask, pTraceFilter, pTrace );
    }
};
extern IEngineTrace* g_pEngineTrace;

---

But when I call TraceRay, my logs keep spamming errors, so now I'm crying for help again.

I don't think my vmt index is wrong, because it was in position 5 in IEngineTrace.h.