Hi,
we implemented our build pipeline with build-flow. The pipeline has several parallel and serial configured jobs. Since we are using this plugin, we are noticing randomly appearing build breaks.

The stacktrace starts with org.codehaus.groovy.runtime.callsite.GetEffectivePojoPropertySite.acceptGetProperty(GetEffectivePojoPropertySite.java:51), thus i'm supposing a relation between the NPE and the parameter that is set with every job i run. It's representing a global build number that is used throught the whole pipeline.

The configuration and console output is attached below. The build (only the buildflow job) always breaks after the big parallel execution part. It occurs in about every fifth build. Because the build is triggered multiple times a day due to the continuous delivery pattern and lasts 30 minutes , this bug is really annoying -> high priority