You can't just load an image into object maker xD
You need a .mesh file for the image to be assigned to. Making objects is so ughhh.
See this tut for basic object-maker-ness:
http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=10002.0 (http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=10002.0)
This is a tutorial for Blender, "free open source 3D content creation suite" {You can make meshes with it}
http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=11025.0 (http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=11025.0)
This is also helpful for when you download/make your own meshes: http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=10011.0 (http://www.feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=10011.0)