png images errors while parsing

hello

ok i will try again to do the change that you are refering to but please tell me exactly what do you mean by this

Also in the servlet code please try to invoke
http://pd4ml.com/api/org/zefer/pd4ml/PD4ML.html#useHttpRequest(HttpServletRequest,%20HttpServletResponse)
method before pd4ml.render()

can you please clarify

thanks