Dear all, I do have zipped data and want to use the package "ff". Unfortunately I am not able to load the date: When I try to use "ffload" I always get: Error in system(cmd, intern = TRUE) : 'unzip' not found Conferring to other R-help posts I already downloaded a software for zipping/unzipping and I also downloaded Rtools. But I still get the same warning as above. Does anyone know what I may do wrong? Do I maybe have to tell R where it can find the zip/unzip-software (and if yes: how do I do it)? Or could it be a problem of Windows 8.1? I would be really happy if someone could help me! -- View this message in context: http://r.789695.n4.nabble.com/ffload-unzip-not-found-tp4686992.html Sent from the R help mailing list archive at Nabble.com.