Looks like we may have a problem with the fork, not code related but because there are simply not enough 1.5.0.0 wallets on the network to form a general consensus.
Me and Matthew are looking at multiple issues at the moment and trying to get Windows and Mac wallets built and move everyone up to the current version.
Looking at peers on the network it can be seen that people are still on version 1.2.0.0!!!!!
Anyone who is fully synced please message me (PM).
We advise to not complete any transactions at this current moment in time.