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Hi Robert, I verified that I can contact the ADDE server on wxmcidas.balloonfacility.com (so access to port 112 is not blocked by a firewall), and that it does not appear that any type of data is associated with the group ESRANGE: DSINFO ALL ESRANGE No Datasets found of Type: IMAGE in Group: ESRANGE No Datasets found of Type: POINT in Group: ESRANGE No Datasets found of Type: GRID in Group: ESRANGE No Datasets found of Type: TEXT in Group: ESRANGE No Datasets found of Type: NAV in Group: ESRANGE DSINFO -- done re: > If you want to login to the server wxmcidas.balloonfacility.com as mcidas let > me know. This would be very helpful! My suspicions are that the McIDAS environment defined for whatever user you were logged in as on the machine (and for which the IMGDISP succeeded) is different than the environment defined in the .mcenv file in the HOME directory of the user 'mcidas'. The "workflow" for an external ADDE connection is: - access to port 112 triggers the running of the script 'mcservsh' which should be installed in the ~mcidas/bin directory - 'mcservsh' reads (sources) the file ~mcidas/.mcenv - '.mcenv' is responsible for setting up environment variables needed for McIDAS applications to run (including ADDE servers) - 'mcservsh' execs mcenv and the serving process proceeds So, the questions are: - what does your ~mcidas/.mcenv file look like? - how does '.mcenv' contents differ from the settings in your interactive login? Cheers, Tom -- **************************************************************************** Unidata User Support UCAR Unidata Program (303) 497-8642 P.O. Box 3000 address@hidden Boulder, CO 80307 ---------------------------------------------------------------------------- Unidata HomePage http://www.unidata.ucar.edu **************************************************************************** Ticket Details =================== Ticket ID: JMF-639122 Department: Support McIDAS Priority: Normal Status: Closed