[IBMiSaveRollbackTask] - Unexpected exception while backing

Hi

Our server is on RTC3.0.1.1 and iSeries Build Toolkit on 3.0. When we tried to deploy a full package from iSeries1 (V6R1) to iSeris2 (V5R4), we encountered the following error about not able to create the temp library CDEF on iSeries2 when CDEF already exists. The same happened for library ABCD which is the target deploy library. As our CRTLIB has been customized to enforce description input, the same exception prompted even if we have both ABCD nad CDEF reoved before deploy. Any clue on this is much appreciated. Thanks.

* deploy:
* Save command: SAVLIB LIB(ABCD) SAVF(CDEF/ABCD) DEV(*SAVF)
* Cannot create library CDEF
* - Unexpected exception while backing up libraries.
* at com.ibm.teamp.deployment.toolkit.taskdefs.IBMiSaveRollbackTask.saveRollback(IBMiSaveRollbackTask.java:217)
* at com.ibm.teamp.depl*oyment.toolkit.taskdefs.IBMiSaveRollbackTask.execute(IBMiSaveRollbackTask.java:166)
* at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
* at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
* at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
* at java.lang.reflect.Method.invoke(Method.java:618)
* at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
* at org.apache.tools.ant.Task.perform(Task.java:348)
* at org.apache.tools.ant.Target.execute(Target.java:357)
* at org.apache.tools.ant.Target.performTasks(Target.java:385)
* at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337)
* at org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:38)
* at org.apache.tools.ant.Project.executeTargets(Project.java:1189)
* at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:416)
* at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
* at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
* at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
* at java.lang.reflect.Method.invoke(Method.java:618)
* at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
* at org.apache.tools.ant.Task.perform(Task.java:348)
* at org.apache.tools.ant.Target.execute(Target.java:357)
* at org.apache.tools.ant.Target.performTasks(Target.java:385)
* at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337)
* at org.apache.tools.ant.Project.executeTarget(Project.java:1306)
* at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
* at org.apache.tools.ant.Project.executeTargets(Project.java:1189)
* at org.apache.tools.ant.Main.runBuild(Main.java:758)
* at org.apache.tools.ant.Main.startAnt(Main.java:217)
* at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
* at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)
* Caused by: Cannot create library CDEF
* at com.ibm.teamp.deployment.toolkit.taskdefs.IBMiSaveRollbackTask.createLibrary(IBMiSaveRollbackTask.java:418)
* at com.ibm.teamp.deployment.toolkit.taskdefs.IBMiSaveRollbackTask.saveRollback(IBMiSaveRollbackTask.java:189)
* ... 29 more