.allEvents throws

[simov]

web3 0.15.1

var contract = initContract()

var event = contract.allEvents({}, {fromBlock: 0, toBlock: 'latest'})

event.watch(function (err, result) {
  if (err) console.log(err)
  console.log(result)
})

{ address: '0x7318ffe0cec891cdba72db4f8f1b48ae5116c281',
  blockNumber: 1731,
  logIndex: 0,
  blockHash: '0x64c37edb40aeeea4c84ef8b033bbb47e3f78b526ed782d7057c6a6eb1826895e',
  transactionHash: '0x384e885f0cf4e9632d55195e0b66429c565d0a60af52b14e73211320004ddd5f',
  transactionIndex: 0,
  event: 'commissioningAddEvent',
  args: 
   { sender: '0x2595d94981fbf2abab6fb999c810ab47878fc645',
     epc: 'urn:epc:id:sgtin:0614141.112345.654321',
     disposition: 'urn:epcglobal:hls:disp:active' } }
{ address: '0x7318ffe0cec891cdba72db4f8f1b48ae5116c281',
  blockNumber: 1731,
  logIndex: 1,
  blockHash: '0x64c37edb40aeeea4c84ef8b033bbb47e3f78b526ed782d7057c6a6eb1826895e',
  transactionHash: '0x384e885f0cf4e9632d55195e0b66429c565d0a60af52b14e73211320004ddd5f',
  transactionIndex: 0,
  event: 'locationLog',
  args: 
   { epc: 'urn:epc:id:sgtin:0614141.112345.654321',
     readPoint: 'urn:epc:id:sgln:0614141.00729.rp97',
     bizLocation: 'urn:epc:id:sgln:0614141.00729.loc5' } }
{ address: '0x7318ffe0cec891cdba72db4f8f1b48ae5116c281',
  blockNumber: 1731,
  logIndex: 2,
  blockHash: '0x64c37edb40aeeea4c84ef8b033bbb47e3f78b526ed782d7057c6a6eb1826895e',
  transactionHash: '0x384e885f0cf4e9632d55195e0b66429c565d0a60af52b14e73211320004ddd5f',
  transactionIndex: 0,
  event: 'timeLog',
  args: 
   { epc: 'urn:epc:id:sgtin:0614141.112345.654321',
     eventTime: '2006-06-25T00:01:00Z',
     eventTimeZoneOffset: '-06:00' } }
/media/SSD/node_modules/web3/lib/web3/filter.js:94
                    callback(null, message);
                    ^

TypeError: callback is not a function
    at /media/SSD/node_modules/web3/lib/web3/filter.js:94:21
    at Array.forEach (native)
    at /media/SSD/node_modules/web3/lib/web3/filter.js:93:26
    at Object.callback (/media/SSD/node_modules/web3/lib/web3/filter.js:210:21)
    at /media/SSD/node_modules/web3/lib/web3/method.js:142:25
    at /media/SSD/node_modules/web3/lib/web3/requestmanager.js:89:9
    at request.onreadystatechange (/media/SSD/node_modules/web3/lib/web3/httpprovider.js:114:13)
    at dispatchEvent (/media/SSD/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:591:25)
    at setState (/media/SSD/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:610:14)
    at IncomingMessage.<anonymous> (/media/SSD/node_modules/xmlhttprequest/lib/XMLHttpRequest.js:447:13)