I tried to uninstall "Searchdirs.com" the way you did it by using the uninstall botton at the bottom but it didn't work.I am so confused and defeated that I don't know what to do but to keep on trying.
My home page was hijacked by "Searchdirs.com", even I had manually removed.hta files wouldn't work. Just when I was desperated, I found an tiny link "uninstal" on its own page! I decided to take the risk. As I followed the steps, I have uninstalled, & my computer is now free of Searchdirs.
Latest development, my post "My Home Page", a few hrs ago