Estuve depurando un código para que se atenga al estandar y pude resolver todos los errores salvo este: (copio a continuación ya que, no sé porqué, no puedo adjuntar como me gustaría una captura de pantalla)
Line 36, column 69: there is no attribute "height"
..." cellpadding="0" border="0" width="779" height="192" align="left">
You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute.
Realmente busque alguna razón por la cual el validator me tira el error pero relamente estoy desconcertado. a continuación agrego también el código para que vean hasta que punto de simplicidad lo lleve para descartar errores pero no entiendo..............
Desde ya, muchas gracias. cualquier sugerencia bienvenida 8si es la resolución al problema mejor
.