Hi Dan: I can no longer view your NcML, but the problem is probably in the declaration of the coordinate variable. The old example had: <dimension name="time" length="0"/> <variable name="time" type="int" shape="time"> <attribute name="units" value="months since 2000-6-16 6:00"/> </variable> <aggregation dimName="time" type="joinNew"> ... now it should be: <variable name="time" type="int"> <attribute name="units" value="months since 2000-6-16 6:00"/> </variable> <aggregation dimName="time" type="joinNew"> ... It is kind of a bug, but since there's a workaround i may not fix it just yet. lemme know if that ixes it Ticket Details =================== Ticket ID: NCD-931813 Department: Support THREDDS Priority: Normal Status: Open