Hi Robin.

I have a promotion that passes a few .zip files to the target config, and for some reason the promotion fails before anything starts. The folder for the promoted files (defined in the source promotion) are created but nothing is in there.
Here is the entire error log:

18:45:22,428 INFO  - Executing pre-execute action...
18:45:22,446 INFO  - Executing post-execute action...
18:45:22,446 ERROR - Step 'master' is failed.
    java.lang.NullPointerException
        at com.pmease.quickbuild.util.FileUtils.listFiles(FileUtils.java:486)
        at com.pmease.quickbuild.util.FileUtils.copyFiles(FileUtils.java:329)
        at com.pmease.quickbuild.grid.CopyFilesJob.execute(CopyFilesJob.java:69)
        at com.pmease.quickbuild.grid.GridNode.executeJob(GridNode.java:484)
        at com.pmease.quickbuild.grid.GridImpl.transferFiles(GridImpl.java:171)
        at com.pmease.quickbuild.setting.configuration.artifactstorage.ServerArtifactStorage$1.download(ServerArtifactStorage.java:77)
        at com.pmease.quickbuild.stepsupport.Step.doExecute(Step.java:592)
        at com.pmease.quickbuild.stepsupport.Step.execute(Step.java:521)
        at com.pmease.quickbuild.stepsupport.StepExecutionJob.executeStepAwareJob(StepExecutionJob.java:31)
        at com.pmease.quickbuild.stepsupport.StepAwareJob.executeBuildAwareJob(StepAwareJob.java:45)
        at com.pmease.quickbuild.BuildAwareJob.execute(BuildAwareJob.java:60)
        at com.pmease.quickbuild.grid.GridJob.run(GridJob.java:115)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)

The server node is Linux by the way. What's more weird is, if I switch the node selection for the master step to "windows node", the config will run normally.

What could be the problem here?

Thanks!