I replace the zlib1.dll in system32 C:\WINDOWS\system32\zlib1.dll with the zlib1.dll in GTK2 D:\GTK2-Runtime\bin\zlib1.dll -- View this message in context: http://r.789695.n4.nabble.com/Problem-in-installing-and-starting-Rattle-tp3042502p3558335.html Sent from the R help mailing list archive at Nabble.com.