FileMaker Pro 7 has been out for few months now, and since FileMaker Pro 6 soon won't be available for purchase, many people are facing the need to upgrade. But FileMaker Pro 7 is such a major change (so much so that William Porter called his TidBITS article about it "FileMaker Pro 7: Can You Say Paradigm Shift?") that upgrading an existing FileMaker solution could be truly difficult, particularly if you're dealing with someone else's badly documented databases. So if you're thinking about upgrading solutions created in FileMaker Pro 3, 4, 5, or 6, you might want to take a look at FMChecker, a inexpensive standalone utility (it doesn't run within FileMaker Pro or FileMaker Developer) that quickly reveals a large number of otherwise scattered and hidden details about your FileMaker Pro files. It can tell you if all referenced files exist in the current environment, what elements a formula uses, how many times a file has been closed improperly or recovered, if a file is currently in use, under what operating system and FileMaker version a file was last used, and much more. It runs in Mac OS 9, Mac OS X, and Windows, and a free preview version is available.