When open tor-browser, it says

Tor failed to establish a Tor network connection.

Connecting to a relay directory failed (missing pluggable transport).

The log is below, could anyone help?

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01/06/2015 15:03:35.786 [NOTICE] DisableNetwork is set. Tor will not make or accept non-control network connections. Shutting down all existing connections.

01/06/2015 15:03:35.786 [NOTICE] Opening Socks listener on 127.0.0.1:9150

01/06/2015 15:03:36.711 [WARN] The communication stream of managed proxy './TorBrowser/Tor/PluggableTransports/fteproxy.bin' is 'closed'. Most probably the managed proxy stopped running. This might be a bug of the managed proxy, a bug of Tor, or a misconfiguration. Please enable logging on your managed proxy and check the logs for errors.

01/06/2015 15:03:36.711 [NOTICE] Failed to terminate process with PID '30230' ('Success').

01/06/2015 15:03:37.711 [NOTICE] Bootstrapped 5%: Connecting to directory server

01/06/2015 15:03:37.711 [WARN] We were supposed to connect to bridge '[2001:49f0:d002:1::2]:80' using pluggable transport 'fte', but we can't find a pluggable transport proxy supporting 'fte'. This can happen if you haven't provided a ClientTransportPlugin line, or if your pluggable transport proxy stopped running.

01/06/2015 15:03:37.712 [WARN] Problem bootstrapping. Stuck at 5%: Connecting to directory server. (Can't connect to bridge; PT_MISSING; count 1; recommendation warn)

01/06/2015 15:03:39.270 [WARN] We were supposed to connect to bridge '[2001:49f0:d00a:1::c]:80' using pluggable transport 'fte', but we can't find a pluggable transport proxy supporting 'fte'. This can happen if you haven't provided a ClientTransportPlugin line, or if your pluggable transport proxy stopped running.

01/06/2015 15:03:39.270 [WARN] Problem bootstrapping. Stuck at 5%: Connecting to directory server. (Can't connect to bridge; PT_MISSING; count 2; recommendation warn)