I am running findbugs plugin version 2.20 and hudson 1.200.

java -version
java version "1.5.0_15"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_15-b04)
Java HotSpot(TM) Client VM (build 1.5.0_15-b04, mixed mode, sharing)

Is the findbugs plugin not compatible with this version of hudson?

java.lang.NoSuchMethodError: hudson.model.Project.getBuilders()Ljava/util/List;
at
hudson.plugins.findbugs.util.HealthAwarePublisher.isMavenBuild(HealthAwarePublisher.java:418)
at hudson.plugins.findbugs.FindBugsPublisher.perform(FindBugsPublisher.java:79)
at
....