MapGuide Enterprise mysteriously dies

Trevor Wekel trevor.wekel at
Thu Jul 27 12:16:36 EDT 2006

Hi Andy,
The MapGuide Server gives out it's IP address to the Web Extensions and
MapAgent when a Service is requested.  The Server interrogates the IP
address for the machine when the mgserver process is started.  If the IP
address of the machine changes while the mgserver process is running
then you will see the behaviour you have mentioned below.  The IP
address is only given out to Service level operations.  The MapGuide
Admin does not use the same functionality.
Hope this helps,



From: Andy Morsell [mailto:amorsell at] 
Sent: Wednesday, July 26, 2006 9:07 PM
To: users at
Subject: MapGuide Enterprise mysteriously dies

I installed MapGuide Enterprise with the .NET web extensions about two
weeks ago on my development machine and got everything re-configured,
including WMS with the newly required Bounds parameter.  Well, after
being on vacation and trying to do some stuff with it today, it was
mysteriously broken.  Everything I did that would access the web
extensions would fail with:

Cannot establish connection. Exception occurred in method
MgServerConnection.Open at line 94 in file

Everything worked OK in MapGuide Admin (PHP based), when running all of
the mapagent tests, and when making WMS calls.  Studio would enumerate
and display all resource information.  But everything related to
rendering a map or a web layout would fail.  I tried to run a repair on
the web extensions and that did not help.  I had to uninstall and
reinstall the web extensions in order for the problem to disappear.  

We've seen this before with MapGuide Open, and it appears to still be a
problem.  I did not install, uninstall, or re-configure anything on this
machine during this time period.  The only thing I did was disconnect it
from it's home network and connect to the internet through a hotel
internet connection to check email.  Very strange, indeed.

Andy Morsell, P.E. 
Spatial Integrators, Inc. <>  

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