Hello, I tried to build an own R package on Windows XP but get an error which I can't solve. I called my package "pack". It works to creat the file "pack" with package.skeleton(). But when I try to compile it with Rcmd build --binary pack I obtain the following error: IO::Seekable::seek missing at C:/R/R-2.9.0/share/perl/FileHandle.pm line 59. Compilation failed in require at C:/R/R-2.9.0/share/perl/R/Dcf.pm line 49. BEGIN failed--compilation aborted at C:/R/R-2.9.0/share/perl/R/Dcf.pm line 49. Compilation failed in require at C:\R\R-2.9.0/bin/build line 28. BEGIN failed--compilation aborted at C:\R\R-2.9.0/bin/build line 28. So if someone could help me on this I would be very greatful. Wishes, Luba Stein [[alternative HTML version deleted]]