This is probably triggered by your network configuration - apparently,
your system's hostname cannot be resolved during available port check...
This thread may help:
http://forums.java.net/jive/message.jspa?messageID=351919
glassfish_at_javadesktop.org wrote:
> When I try to run the installer on debian it gives me a page with admin port, host port, etc. The admin port and http port both have default values wntered. When I click next I get a message that they have not been set and they change colour to red (even though they have a value in them). I cannot get past this step. The actual error message is:
> [$ADMIN_PORT_TEXT]*[{0} {1}]: Host name not found
> [$HTTP_PORT_TEXT]*[{0} {1}]: Host name not found
> [Message sent by forum member 'whybish' (adam.bishop_at_gen-i.co.nz)]
>
> http://forums.java.net/jive/thread.jspa?messageID=391095
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