Hello. I think the problem is that although you click on the .opf file when you transfer the Bookshare book to Bookport, you still need all of the other files which come in the directory for the book to be there. Here, for example, is what my listing looks like for A book I have from Bookshare. Against_All_Enemies_Inside_Americas_War_On_Terror_f1.ncx Against_All_Enemies_Inside_Americas_War_On_Terror_f1.opf Against_All_Enemies_Inside_Americas_War_On_Terror_f1.smil Against_All_Enemies_Inside_Americas_War_On_Terror_f1.xml revstd.css Hope that helps. -Brian