I have some epub books which were previously downloaded from the net to load into a Sony Reader. Would like to load these books into Stanza Desktop and download into iPod Touch. On loading into Stanza Desktop, get the message "java.io.IOException: Pushback buffer overflow". Can anyone help, please?

Hi,
When trying to open a .prc file I get a "Could not load book" error. The message says "java.lang.ArrayIndexOutOfBoundsException: 1503". What does this mean? Sorry if this an obvious thing....

I just downloaded Stanza Desktop to test it with various file types, which reportedly it supports, including PDF. When I try to open a PDF, I receive a Java Script error: Java.lang.NullPointerException and nothing else. I have tried several approaches to creating the PDFs so that it should be readable by a number of readers (the text is text, not images, for example). I am running what I assume is the most recent version of Stanza Desktop (although the app shows no version number).