Problems after I print the NAV log

Every time I print the NAV log for a flight I intend to take, my screen resolution in FS9 changes to something much less (the picture does not fit on the screen any more). I try to then start the intended flight I planned & the program will not load. Then I always have to close the program out & relaunch it. Then everything comes up with the usual 1024X768 16 bit resolution I usually use & all works normal again. Anyone know why this keeps happening to me only when I try to print a NAV log?Thanks.Chris Catalano