There is only one file type that uses the .KPX extension:
Kid Pix Picture
Picture or painting created with Kid Pix, an art creation program for kids; may be exported from a scene or painting created with the Kid Pix Paint Zone; saved in a cross-platform format that can be viewed with both the Macintosh and Windows versions of Kid Pix.
|The Learning Company Kid Pix Deluxe|
Updated: May 12, 2008