Hi, Every time I do system("R CMD check mypackckage" the process executes a help.start(). Why does this happen? Cheers Christian -- Christian W. Hoffmann, CH - 8915 Hausen am Albis, Switzerland Rigiblickstrasse 15 b, Tel.+41-44-7640853 c-w.hoffmann at sunrise.ch, christian at echoffmann.ch, www.echoffmann.ch