Best is save as PDF and use acrobat reader to print posters. Select poster then scale to 150 to get 2 pages A4 side by side or 200% for 4 pages print etc. preview is not working well. you need to select cut marks and then remove cut marks selectinion , only then you will be able to see the currect preciew fo poster printing.
Dani.Tal@cio-1.com