In the collada 1.3 sample data downloaded from http://www.collada.org/public_files/COL ... leData.zip texturedcube.dae contains the line
<image id="Img_Textures_Checker" name="Img_Textures_Checker" source="file:///C:/COLLADA_DataExchange_Test/Data/SourceXML/Other/Textures/Checker.ppm"/>
however there is no file named Checker.ppm in COLLADA_1.3_SampleData.zip. Similarly the textures for texturedrevolve.dae and multitexture.dae are also missing.