I don't usually review software here, I'm posting this for your information. If you own an older version of the software, and want to upgrade, there is no upgrade path. the authors reply email said "Due to the huge reconstruction required to produce the OS X version of of the software, it is not a free upgrade." Huge reconstruction? Like opening the file up in Filemaker 5.5 and saving it out as a new version? (The version number between the classic version and the OS X version went from 7.8.5 ot 7.8.7, so it couldn't have been the "huge reconstruction" he said it was. The software is ok, but the upgrade policy SUCKS.