network error (proxy)17:48:29: 0
<null>
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-1 / empty / <null> means no response received.
This is either your network was down, the proxy wasn't working, something on your machine blocked the request / the site server timed out and didn't respond in time (unlikely but does happen)
If using a proxy, test it:
Please confirm your proxy is working, more info on how to do that here:
viewtopic.php?f=15&t=3453
Regards,
Martin