If you are an end user wanting to use the editor you are probably in the wrong place. Download a prebuilt release instead, from: http://www.imt.liu.se/mi/ehr/ If you are a developer interested in modifying the source code, then read the readme files etc. in the 'doc' subdirectory before continuing. You need to have maven2 installed to build this project, see: http://maven.apache.org/ Prior to running this as a maven build you need to have compiled and installed the java-ref-impl and LiU-EHR-GUI into your local maven repository. This is done by downloading and unpacking these two packages found at openehr.org. For each of the two packages, starting with java-ref-impl, go in to the unpacked directory and type: mvn clean install Some jars can not be downloaded and installed by Maven, instead they are supplied in the lib directory. - On windows, just run the batch file Maven2_repo_install.bat (in the lib directory) to fix this. On other - On OSX (and probably many unix/linux based systems) go to the lib directory and then run the file Maven2_repo_install_osx.sh (e.g. by typing ./Maven2_repo_install_osx.sh in the Terminal) - For other platforms look at the contents of the batch file and execute the same maven commands some other way. The procedures above should only need to be done once. Then in order to build the LiU Archetype Editor you enter it's root directory (probably the one that contains this readme file) and type the appropriate maven commands, see the file Readme_implementers in the doc subdirectory for details.