How to over come these Warnings in using XOverlay to display on Win32 window

[vivekr]

** (Xoverlay.exe:6108): CRITICAL **: file c:\documents and
settings\ramakrvi\my
documents\visual studio 2005\projects\xoverlay\xoverlay\xoverlay.cpp: line
377:
assertion `overlay != NULL' failed

(Xoverlay.exe:6108): GLib-GObject-WARNING **: cannot register existing type
`Gst
XOverlay'

(Xoverlay.exe:6108): GLib-GObject-CRITICAL **:
g_type_interface_add_prerequisite
: assertion `G_TYPE_IS_INTERFACE (interface_type)' failed

(Xoverlay.exe:6108): GLib-GObject-WARNING **: invalid cast from
`GstDirectDrawSi
nk' to `<invalid>'

** (Xoverlay.exe:6108): CRITICAL **: file
..\..\..\Source\gstreamer\gst\gstinter
face.c: line 157: assertion `gst_element_implements_interface (GST_ELEMENT
(from
), iface_type)' failed


These are the warnings that one gets when we use the XOverlay interface for
displaying on Win32 window.

Please throw some light.

Thanks and Regards,
Vivek Ramakrishnan

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