Hi, I'm using ShortRead package version 1.0.7 on R 2.8.0. I have three binary map files produced by MAQ that I want to read into Bioconductor. I can read one file at a time with the function ReadAligned, by typing aln <- readAligned(dir,"S1.map",type="MAQMap") This works like a charm. However, I cannot read all files in the directory > aln <- readAligned(dirPath=dir,type="MAQMap") Error: UserArgumentMismatch 'dirPath', 'pattern' must be 'character(1)' I tried specifying the pattern argument but the function still doesn't work. > aln <- readAligned(dirPath=dir,pattern="S.*",type="MAQMap") Error: UserArgumentMismatch 'dirPath', 'pattern' must be 'character(1)' Is this a bug or am I doing something wrong? Any ideas/help are most welcome. David [[alternative HTML version deleted]]