Machines fail to PXE Boot

Machines fail to PXE boot with the following error, I'm using latest trunk (rev 3082)

2014-09-24 21:44:03-0500 [-] Logged OOPS id OOPS-673689a6dae717f76772cc687997feb5: No exception type: No exception value
2014-09-24 21:44:03-0500 [-] Logged OOPS id OOPS-1698ffdf6cab9fdd75c5e0912bdfb11a: NoConnectionsAvailable:
2014-09-24 21:44:03-0500 [-] Logged OOPS id OOPS-552ac55de393079083137f1b967cba25: NoConnectionsAvailable:
2014-09-24 21:44:03-0500 [-] Logged OOPS id OOPS-61c83845800ff648377960c51c92ff66: No exception type: No exception value
2014-09-24 21:44:06-0500 [TFTP (UDP)] Datagram received from ('192.168.122.101', 50011): <RRQDatagram(filename=pxelinux.0, mode=octet, options={'blksize': '1432', 'tsize': '0'})>
2014-09-24 21:44:06-0500 [TFTP (UDP)] Datagram received from ('192.168.122.101', 50011): <RRQDatagram(filename=pxelinux.0, mode=octet, options={'blksize': '1432', 'tsize': '0'})>
2014-09-24 21:44:06-0500 [-] Unhandled error in Deferred:
2014-09-24 21:44:06-0500 [-] Unhandled Error
 Traceback (most recent call last):
   File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 139, in maybeDeferred
     result = f(*args, **kw)
   File "/usr/lib/python2.7/dist-packages/provisioningserver/pserv_services/tftp.py", line 215, in get_reader
     description=file_name)
   File "/usr/lib/python2.7/dist-packages/provisioningserver/utils/twisted.py", line 102, in wrapper
     return func(*args, **kwargs)
   File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1237, in unwindGenerator
     return _inlineCallbacks(None, gen, Deferred())
 --- <exception caught here> ---
   File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1099, in _inlineCallbacks
     result = g.send(result)
   File "/usr/lib/python2.7/dist-packages/provisioningserver/events.py", line 155, in send_event_node_mac_address
     client = getRegionClient()
   File "/usr/lib/python2.7/dist-packages/provisioningserver/rpc/__init__.py", line 39, in getRegionClient
     return rpc_service.getClient()
   File "/usr/lib/python2.7/dist-packages/provisioningserver/rpc/clusterservice.py", line 469, in getClient
     raise exceptions.NoConnectionsAvailable()
 provisioningserver.rpc.exceptions.NoConnectionsAvailable:

2014-09-24 21:44:06-0500 [-] Unhandled error in Deferred:
2014-09-24 21:44:06-0500 [-] Unhandled Error
 Traceback (most recent call last):
   File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 139, in maybeDeferred
     result = f(*args, **kw)
   File "/usr/lib/python2.7/dist-packages/provisioningserver/boot/windows.py", line 203, in get_node_info
     return request_node_info_by_mac_address(remote_mac)
   File "/usr/lib/python2.7/dist-packages/provisioningserver/utils/twisted.py", line 102, in wrapper
     return func(*args, **kwargs)
   File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1237, in unwindGenerator
     return _inlineCallbacks(None, gen, Deferred())
 --- <exception caught here> ---
   File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1099, in _inlineCallbacks
     result = g.send(result)
   File "/usr/lib/python2.7/dist-packages/provisioningserver/boot/windows.py", line 99, in request_node_info_by_mac_address
     client = getRegionClient()
   File "/usr/lib/python2.7/dist-packages/provisioningserver/rpc/__init__.py", line 39, in getRegionClient
     return rpc_service.getClient()
   File "/usr/lib/python2.7/dist-packages/provisioningserver/rpc/clusterservice.py", line 469, in getClient
     raise exceptions.NoConnectionsAvailable()
 provisioningserver.rpc.exceptions.NoConnectionsAvailable:

2014-09-24 21:44:06-0500 [-] Logged OOPS id OOPS-fed9a8914f1e0bbb9405406c03865797: No exception type: No exception value
2014-09-24 21:44:06-0500 [-] Logged OOPS id OOPS-0b36b04c5d68d48e2a12596bb3b5da9a: NoConnectionsAvailable:
2014-09-24 21:44:06-0500 [-] Logged OOPS id OOPS-4b36a0351a05fbd63fc10ed097f8e466: No exception type: No exception value
2014-09-24 21:44:06-0500 [-] Logged OOPS id OOPS-967033fdb988e3935ee82f8023707f7f: NoConnectionsAvailable: