I have a client which had been using A2003 and just upgraded to A2007. No problems except for 1 report. It was a summary report which only showed 1 line per month, so it was only 1 page with from 1 to 12 lines (depending on when they ran it in the year). When they previewed it in A2007, instead of seeing the monthly totals, all they got was a big black area under the column headings. When I got to see it finally, I realized that the totals eventually did show; but there was maybe a page or 2 of black, then a total, then more black, then another total, etc.
I fixed it by making the Detail section invisible. But when telling a friend about it, he said “maybe there was a control in the detail section?”. But the report was designed with a Detail section with a height of 0″, and when I expanded the section I couldn’t see any controls. At least at first. But there was one! It was a Line control with Top=0″ and Height=0″! Apparently A2003 treats a Detail section of Height=0″ as invisible, whereas A2007 doesn’t, so it kept printing that line. Fun times!
