Hi Folks, I hope I'm in the right list here. Wasn't sure whether to go to users or devs. So, I chose the second one as my problem is more dev related. I'm having trouble building guvnor and would appreciate your help. I checked out all the drools trunk into eclipse and can run the guvnor test cases without problem. Yet, when I try to package and install, I get the ERROR 1 below. And when I try to build the complete drools project with its subprojects, I get the second error error message below. I have the exact trunk copy. I understand I'm doing something wrong with maven, that's why I need your input. Thanks, Klaus. ==========================ERROR 1======================== [ERROR] Failed to execute goal on project drools-guvnor: Unable to get dependency information for org.drools:drools-repository:jar:5.2.0.SNAPSHOT: Failed to process POM for org.drools:drools-repository:jar:5.2.0.SNAPSHOT: Non-resolvable parent POM org.drools:drools:5.2.0.SNAPSHOT for org.drools:drools-repository:5.2.0.SNAPSHOT: Failed to resolve POM for org.drools:drools:5.2.0.SNAPSHOT due to Missing: ---------- 1) org.drools:drools:pom:5.2.0.SNAPSHOT =================================================== ==========================ERROR 2=========================== [ERROR] The project org.drools:drools-grid-local:5.2.0.SNAPSHOT (C:\Development\worskpace\trunk\drools-grid\drools-grid-local\pom.xml) has 1 error [ERROR] 'dependencies.dependency.(groupId:artifactId:type:classifier)' must be unique: org.codehaus.btm:btm:jar -> duplicate declaration of version 1.3.3 [ERROR] The project org.drools:drools-grid-task:5.2.0.SNAPSHOT (C:\Development\worskpace\trunk\drools-grid\drools-grid-task\pom.xml) has 2 errors [ERROR] 'dependencies.dependency.(groupId:artifactId:type:classifier)' must be unique: org.apache.mina:mina-core:jar -> duplicate declaration of version 2.0.0-M6 [ERROR] 'dependencies.dependency.(groupId:artifactId:type:classifier)' must be unique: com.h2database:h2:jar -> version (?) vs 1.2.128 [ERROR] The project org.drools:drools-bpmn2:5.2.0.SNAPSHOT (C:\Development\worskpace\trunk\drools-process\drools-bpmn2\pom.xml) has 1 error [ERROR] 'dependencies.dependency.(groupId:artifactId:type:classifier)' must be unique: org.apache.felix:org.osgi.core:jar -> duplicate declaration of version (?) [ERROR] [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException -- GMX DSL Doppel-Flat ab 19,99 €/mtl.! Jetzt auch mit gratis Notebook-Flat! http://portal.gmx.net/de/go/dsl