One thing to make sure you have a report that will print correctly is to insure the palette does not exceed the allowable size. If you set the margin size to 1" (default) and the report is setup as portrait - your pallet cannot exceed 6" or it will print on multiple pages.
Turn on the Ruler and insure the palette does not exceed the page size minus the left and right margin size. You can always set the palette size by clicking on the designer and setting the width to the maximum allowable.
As a general rule - I always set the margins to .25 for all (left/right/top/bottom) - then before I start adding anything I set the palette to 10.5 inches (landscape mode - 11 inches, minus .50 (left/right).