Missing areas of pdf from publisher

I am using pdfcreator 1.4.2 and Windows 7.

I need to create a pdf of a poster 82cm x 115cm from MS Publisher. I have done this many times before without problem, but now the pdf is missing the last quarter of the poster along the width and the bottom quarter of the poster along the height. However the bottom part, whilst missing the background colours and Wordart images, is showing the text created in text boxes??? I have set the paper size to be a custom post script to fit and also oversized A0, thinking maybe the custom size was incompatible. But the same thing happens - blank areas! This poster needs to be sent to my Print Company this week!!!