search for: colo001fin

Hi list, I was running Sweave on one of my .rnw file.? Everything was fine, until I came back from the vacation.? Nothing changed (at least to my knowledge), but now I have this problem: >???? Sweave("myfile.rnw") Error: ?COLO001final.rnw? is not ASCII and does not declare an encoding After snooping around on the web, I found this solution: > Sweave("myfile.rnw", encoding="utf8") Now everything works fine. Could somebody explain to me what happened?? Why I need to specify the "encoding" no...