I use WIndows XP and Paf 5.2. I imported a file that showed a marriage of husband to wife then another as wife to husband, but gender was not included with the file. So PAF shows a marriage of male tom to mary and one for teh same couple as female tom to male Mary. I can delete two of such listings by using teh marriage pull down and deleting the entry. On the third person I try PAF always freezes up. I tried exporting as GED and then using wordpad to delete the wrong entries, then reloading as a new file but it ended up adding lots of unknowns for some reason.