Intuit, the maker of QuickBooks and Quicken, does not make good OS X software. Why? Because it can't read the Window's versions of its files. I bought Quicken so we could edit our Quicken files with our Macs, as we currently do with our PCs (data file is stored on Linux). To edit our Quicken files on the Mac, we have to export a QIF file from Quicken/Win and then import on Quicken/Mac. Good thing I wasted my money on a Windows version of Quicken and a Mac version - since I'll obviously only be able to use one.
Same goes for QuickBooks - if you want to edit your Windows-created QuickBooks file on a Mac, you must export/import. That just sucks! Intuit - have you ever heard of this company called Microsoft? They seemed to have no problems making their software read files created by either platform - maybe you should take a lesson from them.