ObjectARX 2007: AcEdJig problem

I am using AcEdJig class to move/copy customized points. It works fine
in AutoCAD R15.0 and R16.0 but once I upgraded my codes to R.17.0 (I
did some unicode stuff changes on R.17.0 version, autocad 2007). It
just crashed when I used AcEdJig.

My codes are as follows:


class ObjectJig : public AcEdJig
{
public:
ObjectJig();
~ObjectJig();
virtual AcDbEntity *entity() const;
virtual DragStatus sampler();
virtual Adesk::Boolean update();
virtual DragStatus Run(CString Prompt);

void setTransform(AcGeMatrix3d trans);
void addObject(AcDbObjectId id);
void addObjects(AcDbObjectIdArray &ids);

void applyTransform();

private:

TransformedObjects mTransObject;
AcGeMatrix3d mTransform;

};

class MoveJig : public ObjectJig
{
public:
virtual DragStatus sampler();
virtual DragStatus Run(CString Prompt);

void setRefPoint(AcGePoint3d pt) {mRefPoint = pt;}

private:
AcGePoint3d mRefPoint;
AcGePoint3d mPoint;
};

........// implementation of class function

//********************************************
AcEdJig:ragStatus MoveJig::Run(CString Prompt)
//********************************************
{
AcEdJig:ragStatus status;
mPoint = mRefPoint;
setDispPrompt(Prompt);

status = drag();

if(status == AcEdJig::kNormal)
applyTransform();

return status;
}



I debugged into the AcEdJig function, the program crashes inside
AcEdJig:ragStatus MoveJig::Run(CString Prompt) at status = drag();.
It is so strange as R15.0 and R16.0 version works fine for this
function but R17.0 version crashes at this function. Anyone Any ideas
about this problem. Thanks in advance.