Oracle OutsideIn Content Viewer technology

Hi,

I am currently using Oracle OutsideIn Content Viewer. I am calling it using C# via unmanaged code mapping :

[StructLayout(LayoutKind.Sequential)]private struct SCCVWVIEWFILE40

{public IntPtr dwSize;//4public int dwSpecType; //4public IntPtr pSpec; //4public int dwViewAs; //4[MarshalAs(UnmanagedType.I1)]public bool bUseDisplayName; //1

[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 256)] //256// [MarshalAs(UnmanagedType.FunctionPtr,SizeConst = 256)]public string szDisplayName;[MarshalAs(UnmanagedType.I1)]public bool bDeleteOnClose; //1

public int dwFlags; //4// [MarshalAs(UnmanagedType.U8)]public ulong dwReserved1;//8//[MarshalAs(UnmanagedType.U8)]public ulong dwReserved2;//8};Everything was working well in 32bit environment however after upgrading to 64bit, it cannot view the files with error  7 from the SCCVW_VIEWFILE command.I changed all that is needed in the mapping above but still the same. Any guidance on where i need to change? I am sure i am using the correct 64bit library.thank you