Any person who had this not work, might try downloading again because it worked perfectly for me - on a 2010 MacMini. I have a boatload of old .wps files from a Windows computer where I was using Works for years - for decades. So I read the reviews, thought about my options, and gave it the old $5 try. Wow ! Not only was the operational dialog window intuitive and clear, it then did exactly as I set up my choices : export as .rtf - “Source as destination folder” - and the two “Keep" date options. Voila ! After the Export button was clicked, very little time went by, it said Successful - and it was. There next to my original file was the .rtf file I asked for. Pages can open it just fine. Hallejulah ! SO . . . after I had moved and “Exported” a few individual files - I decided to give it an acid test. I drag/dropped a whole folder into WPSConvert - figuring that I could just delete any non .wps files. There was no need !!! WPSConvert simply pulled over ONLY the .wps files. I clicked Export All - a small amount of time, and “Successful” came up - I checked my folders - ( Insert huge Smiley Face here !! ) - Every old .wps file now had right next to it an .rtf file. This old-engineer-fart, who wrote Fortran programs more than 50 years ago, and was dreading the hours and hassles of file conversion - is going to go have a beer and sit in his backyard instead.