Issue when I run step: Exception in thread "Thread-43" in PDI 4.4

Hi Everybody,

I have the following issue and I hope that anybory can help me.

When I run a transformation this not do anything and display this information in my log.

INFO 28-01 14:38:10,273 - Transformation metadata - The shared object fie [null] is empty!
INFO 28-01 14:38:10,427 - SCRAP_WALTMART - Transformation is pre-loaded.
INFO 28-01 14:38:10,427 - Spoon - Transformation opened.
INFO 28-01 14:38:10,428 - Spoon - Launching transformation [SCRAP_WALTMART]...
INFO 28-01 14:38:10,428 - Spoon - Started the transformation execution.
INFO 28-01 14:38:10,616 - SCRAP_WALTMART - Dispatching started for transformation [SCRAP_WALTMART]
INFO 28-01 14:38:10,616 - SCRAP_WALTMART - Nr of arguments detected:0
INFO 28-01 14:38:10,616 - SCRAP_WALTMART - Safe mode is enabled for this transformation
INFO 28-01 14:38:10,616 - SCRAP_WALTMART - This is not a replay transformation
Exception in thread "Thread-43" java.lang.IllegalArgumentException: Comparison method violates its general contract!
at java.util.TimSort.mergeLo(TimSort.java:747)
at java.util.TimSort.mergeAt(TimSort.java:483)
at java.util.TimSort.mergeCollapse(TimSort.java:410)
at java.util.TimSort.sort(TimSort.java:214)
at java.util.TimSort.sort(TimSort.java:173)
at java.util.Arrays.sort(Arrays.java:659)
at java.util.Collections.sort(Collections.java:217)
at org.pentaho.di.trans.TransMeta.sortStepsNatural(TransMeta.java:4253)
at org.pentaho.di.trans.Trans.prepareExecution(Trans.java:578)
at org.pentaho.di.ui.spoon.trans.TransGraph$22.run(TransGraph.java:3652)
at java.lang.Thread.run(Thread.java:724)



Please help me

Regards!