症状

Creating a plan with the help of a Maven pom.xml fails with

com.atlassian.bamboo.build.PlanCreationException: No Maven 2 builder found, should not occur
at com.atlassian.bamboo.ww2.actions.admin.ImportMavenPlanCreatePlanAction.createBuilder(ImportMavenPlanCreatePlanAction.java:184)

原因

1. The maven 2.x builder is not configured in the server (builder) capabilities.
2. Maven 2 is not installed on the bamboo server box

ソリューション

Install Maven 2 and add the maven 2 builder capability manually.