Hello:
I have a problem to set up a project. I made a project called "proyecto1", The problem is when I tried to connect in a client server. The log it says:

Sun 20 Dec 2009 06:28:07 PM CLST | Fetching configuration file from http://172.16.58.217/proyecto1/get_proyect_config.php
Sun 20 Dec 2009 06:28:07 PM CLST | proyecto1 | Master file download succeeded
Sun 20 Dec 2009 06:28:07 PM CLST | proyecto1 | Sending scheduler request: Project initialization. Requesting 1 seconds of work, reporting 0 completed tasks
Sun 20 Dec 2009 06:28:07 PM CLST | Project communication failed: attempting access to reference site
Sun 20 Dec 2009 06:28:07 PM CLST | Internet access OK - project servers may be temporarily down.
Sun 20 Dec 2009 06:28:07 PM CLST | Scheduler request failed: Couldn't resolve host name
Sun 20 Dec 2009 06:28:07 PM CLST | Sending scheduler request: Project initialization. Requesting 1 seconds of work, reporting 0 completed task

I know that it doesn't a client problem because when I tried to join an another project, It's OK.
It maybe that I forget some step but I don't which step is.
Thank you for help

That's particularly strange because "172.16.58.217" is not a hostname that has to be resolved... What's the master URL defined in config.xml?

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I have seen this kind of error happen when I used the wrong ip adres inside the configs or on the client, are you sure the ip-address of the machine is correct, and hasen't changed recently.