Hi together

I have an area, which I want to print (the area fits exactly to a paper in the format A4 - thus it is 297mm x 210mm). When I choose the area to print, everything looks good, except a line 4.5mm away from the paper edge. The line is printed where the print-area starts. The line is also printed on bigger pages, just to "show" the print area. How can I remove this line? (Or at least make it white?)

I'm working on Mac OS X (10.6 and 10.8) with the actual version (2013, V1R3.1) - and as far as I know, this behavior was not existing in version 2012.