var listers = DOpus.GetListers('c');
DOpus.Output(DOpus.TypeOf(listers));
if (listers)
DOpus.Output(DOpus.TypeOf(listers.lastactive));
listers = DOpus.listers;
DOpus.Output(DOpus.TypeOf(listers));
if (listers)
DOpus.Output(DOpus.TypeOf(listers.lastactive));
A Lister from DOpus.GetListers(), always seems empty. Note that the 'c' flag is not neccesary for this.
