Do you mean, this "com_opensim_maps_VIEW_DEFAULT_TITLE" is in the list for selecting the menue type (like
help.jopensim.com/bilder/event_list/event_list01.png
)? Or where exactly does this turn up?
An empty map is often an indicator for some missing or wrong global config parameters or that the OpenSim itself is currently down.
Greetz
FoTo50