OK, the web page is working. I can login and upload files.
Running gLiveSupport.sh, nothing happens during 3 minutes, then I get a popup message saying "Storage server not available".
The error message in the console looks like:
$ /usr/local/livesupport/bin/gLiveSupport.sh
using configuration file: /usr/local/livesupport/etc/gLiveSupport.xml
using config file '/usr/local/livesupport/etc/gLiveSupport.xml'
Error in XmlRpcClient::writeRequest: write error (error 110).
some problem with the configuration