It is not possible for a component within a production to update the production, which is what you are trying to do using the third parameter of EnableConfigItem equal to 1. That is why you are receiving ERROR <Ens>ErrJobRegistryNotClean (the process trying to update the production is trying to update itself).

You should update the production by running UpdateProduction via Job command, as follows:

Set tSC = ##class(Ens.Director).EnableConfigItem(pConfigItemName,0,0)
Set tSC = ##class(Ens.Director).EnableConfigItem(pConfigItemName,1,0)
job ##class(Ens.Director).UpdateProduction()

Hope this helps.

Check out this example:

ListDir ;
  s ret=##class(%File).FileSetExecute(.x,"C:\temp","*","",1)
  f i=1:1 s ret=##class(%File).FileSetFetch(.x,.y) q:y=""  s ^FileList(i)=y
  s i=""
  f  d  q:i=""
  . s i=$o(^FileList(i)) q:i=""
  . s mylist=^(i)
  . i $list(mylist,2)="D" s dir=$list(mylist,1) w !,dir
  . q
  q

Try username SYS password XXX. You can change the password using Control Panel|Security|User accounts ( TRM:  account).

Thanks.