Certain nodes are experiencing crashes halfway through compilation. They give the following reason:

at com.pmease.quickbuild.execution.Commandline$ExecuteResult.buildException(Commandline.java:489)
        at com.pmease.quickbuild.plugin.basis.CommandBuildStep.run(CommandBuildStep.java:268)
        at com.pmease.quickbuild.plugin.basis.CommandBuildStep$$EnhancerByCGLIB$$f9a885b7.CGLIB$run$12(<generated>)
        at com.pmease.quickbuild.plugin.basis.CommandBuildStep$$EnhancerByCGLIB$$f9a885b7$$FastClassByCGLIB$$6c8c721f.invoke(<generated>)
        at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:215)
        at com.pmease.quickbuild.DefaultScriptEngine$Interpolator.intercept(DefaultScriptEngine.java:261)
        at com.pmease.quickbuild.plugin.basis.CommandBuildStep$$EnhancerByCGLIB$$f9a885b7.run(<generated>)
        at com.pmease.quickbuild.stepsupport.Step.execute(Step.java:539)
        at com.pmease.quickbuild.stepsupport.StepExecutionJob.executeStepAwareJob(StepExecutionJob.java:30)
        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:106)
        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)

This is happening on QuickBuild 6.1.2. Can anyone please kindly help?