i'm in the process of moving a huge ant/ivy based build to jenkins. before the build starts the ivy.xml files are parsed and produce exceptions because those contain a lot of parameters that are defined in our project specific ivysettings.xml. i think the jenkins ivy build should always include the project specific ivysettings.xml file (when in the same directory as build.xml). as a workaraound you can set the ivysettings.xml file manually.