If there is a typo in the modName of a module sent to the servlet: http://crosswire.org/sword/servlet/SwordMod.Verify?modName=GerLut&pkgType=raw It will create a zero length file in ftp.crosswire.org/pub/sword/packages/rawzip porra.zip is an example. Sorry about that, I was testing for some changes to JSword and goofed up the name.