I did a search on Daz's forum and found some of comments on it. It seems that the program scans all your installed items every time it's run. If you have a lot of content, and you probably do if you're looking for a program like this, it can take quite some time. Folks are complaining about it and the author is giving some BS excuse (or what I see as BS) for it. He mentions that it's not really a cataloguer (?) and for cataloguing one should use 'CCPro'. I could not find CCPro anywhere on Daz or the net for that matter. Considering the lack of discussion on the forums, it can't be that popular.