Rich, I tried the catalog on our test server: failure Then updated test server to latest trunk code: failure. I don't know why my work environment works. The details I found so far are: The ncml path for ToolsUI and TDS catalog are slightly different. I'm investigating calls to Variable resetDimensions() now. Will let you know when I find the problem Robb.... Ticket Details =================== Ticket ID: ZUR-765141 Department: Support THREDDS Priority: Normal Status: Open