Hello, I'm using DrRacket as an accompanying material for the HtDP book. I'm learning it by myself, not as a part of a schooll assignment. I have a problem with the exercise 2.2.1 - when I run the convert-file program it doesn't want to accept the input file, the error message I get is: > (convert-file "<a href="http://file.in">file.in</a>" Fahrenheit->Celsius "out.dat") convert-file: expects a name of existing file in c:\users\jakub hadam\documents\drracket\ as first argument, given "<a href="http://file.in">file.in</a>" > I've made sure the file is in the specified folder, but DrRacket seems to refuse to see it. I would be thankfull for any help and sugestions. (I have no problem running convert-gui and convert-repl. I use the "Beginning Student" language. The OS is Win7Premium) Thanks a lot for your help. Jakub