Emonpi failing to update local emoncms server WARNING emoncmsorg send failure: wanted 'ok' but got ''

The nanode that I used to use to capture EmonTx data having failed, I thought I'd try the EmonPi that I got from the Kickstarter project (complete with US power supplies!) It started OK, updated it and setup the emonhub. Looks as if it works but doesn't.

Emonhub log viewer gives: 2016-04-07 19:24:18,643 INFO emoncmsorg sending: http://192.168.0.2/emoncms/input/bulk.json?apikey=E-M-O-N-C-M-S-A-P-I-K-E-Y&data=[[1460057032,5,0,0,0,0,0,0,0,0,0,0,4],[1460057034,8,18,7,0,0,246.31,0,-76],[1460057037,5,0,0,0,0,0,0,0,0,0,0,4],[1460057042,5,0,0,0,0,0,0,0,0,0,0,4],[1460057045,8,16,4,1,0,246.09,0,-76],[1460057047,5,0,0,0,0,0,0,0,0,0,0,4],[1460057052,5,0,0,0,0,0,0,0,0,0,0,4],[1460057056,8,15,6,1,0,245.33,0,-76],[1460057057,5,0,0,0,0,0,0,0,0,0,0,4]]&sentat=1460057058 2016-04-07 19:24:18,787 WARNING emoncmsorg send failure: wanted 'ok' but got ''

WAMP access log gives this, which is obviously wrong

192.168.0.170 - - [07/Apr/2016:20:24:18 +0100] "POST /emoncms/input/bulk.json?apikey=xxxxxxxxxxxxxxxxxxxxxxx HTTP/1.1" 200 -

A correct input is like this 192.168.0.2 - - [07/Apr/2016:20:24:20 +0100] "POST /emoncms/input/post?apikey=xxxxxxxxxxxxxxxxxxxxxxxxxxxxx&time=1460057060&json={XXX604_ch1_w:-3.00,XXX604_ch2_w:-0.50,XXX604_aux1_w:0.00,XXX604_aux2_w:0.00,XXX604_aux3_w:0.00,XXX604_aux4_w:0.00,
XXX604_aux5_w:449.81,XXX604_ch1_wh:114866.10,XXX604_ch2_wh:-97394.33,XXX604_aux1_wh:254514.74,XXX604_aux2_wh:421336.83,XXX604_aux3_wh:7360.12,
XXX604_aux4_wh:633424.44,XXX604_aux5_wh:240926.22} HTTP/1.1" 200 2 Emonhub config entry [[emoncmsorg]] Type = EmonHubEmoncmsHTTPInterfacer [[[init_settings]]] [[[runtimesettings]]] pubchannels = ToRFM12, subchannels = ToEmonCMS, url = http://192.168.0.2/emoncms apikey = xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx senddata = 1 sendstatus = 1

Any ideas about what I'm doing wrong?