Plenty of info in your post so we will have no problems in pointing you in the right direction for a solution.No wait a minute you posted 18 hours ago had 36 views but no one has attempted to help. Strange!!!!!
Do you want to completely unstaller all the applications.......etc etc
unstaller??? What is that? What is the complete error message? What operating system are you using? Is the disk damaged/dirty/ Is this the first time you have had this error when trying to install something?