Tor launcher should not allow impossible configurations: eg. restricted firewall + obfs3 bridges
In TBB 3.6-beta-1 for example, if I configure a firewall restricted to ports 80 and 443, and ask to use the preconfigured obfs3 bridges, then the process bar on the "connecting" windows doesn't move and Tor never connects.
If this configuration combination is not possible in Tor, it shouldn't be allow to set via Tor launcher in the first place.
This issue was initially reported on bug tracker: https://labs.riseup.net/code/issues/6985