Can't you see this clear Paul? Dll's are only restricting! If you don't want to read or change the source, then don't, but when you really need to change something, you have it in front of you.

Of course the person who wrote it can debug it, but this way you waste tons of time, with responding, error messages and a lot of other stuff that takes time. Ie, how do you know which line the error occurred in?

Yeah, kedaman and microsoft are two great code debuggers, but i don't see the connection. Microsoft or Desware are huge companies, I'm working in small groups.