Could you please try to set
"logging": {
"files": {
"level": "info",
"directory": "logs",
"flushInterval": 5
},
and
"charts": {
"pool": {
"hashrate": {
"enabled": true,
"updateInterval": 3,
"stepInterval": 10,
"maximumPeriod": 600
},
and check that there is something like
2014-08-14 19:32:07 Started
in /logs/chartsDataCollector_info.log, and something like
2014-08-14 19:38:46 hashrate chart collected value 93. Total sets count 50
2014-08-14 19:38:46 hashrate data: [[1408044526,0,4],[1408044538,6.75,4],.........,[1408045021,107.5,4],[1408045033,110,4],[1408045045,103,4],[1408045057,109.25,4],[1408045069,109.25,4],[1408045081,107,4],[1408045093,104.25,4],[1408045105,93.25,4],[1408045117,92.25,4]]
in /logs/charts_info.log