The Portable Freeware Collection Forums

I loaded dropit and can get it to delete old files with a manually triggered association. However, I can not get it to do this automatically. It does not look at the existing association and says there is none. I follow the prompt to create a new association but get the same fault when it tries to run. When I create an association from the Monitoring tab, I do not see a way to make it specific to old files. It looks like it would deletes all files of that type (if I could get it to run). I'm working with mkv files. Does the software not have the capability or am I doing something wrong? Thanks