I have always found that SAS ignores the directionality of the slashes (i.e., works well regardless if one uses back slashes, forward slashes, or a combination of them). However, in your example the input file was on drive O:, but you indicate that it returned a message regarding drive c: .. and in a typical user path rather than the path you had specified. Could it be that it simply can't find the file in the path that you specified? ... View more