Caretaker

After updating the instance to TYPO3 4.6.1 faile each test:

Command execution failed: Invalid result: <br /> <b>Fatal error</b>:  Call to undefined method t3lib_div::makeInstanceClassName() in <b>/XXXXXX/typo3conf/ext/caretaker_instance/classes/class.tx_caretakerinstance_Operation_GetRecord.php</b> on line <b>121</b><br />

CURL Info: array (
  'url' => 'http://xxx.xxxxxx.xx/?eID=tx_caretakerinstance',
  'content_type' => 'text/html; charset=utf-8',
  'http_code' => 200,
  'header_size' => 296,
  'request_size' => 1834,
  'filetime' => -1,
  'ssl_verify_result' => 0,
  'redirect_count' => 0,
  'total_time' => 0.17511,
  'namelookup_time' => 3.9E-5,
  'connect_time' => 0.001061,
  'pretransfer_time' => 0.001068,
  'size_upload' => 1643,
  'size_download' => 227,
  'speed_download' => 1296,
  'speed_upload' => 9382,
  'download_content_length' => -1,
  'upload_content_length' => -1,
  'starttransfer_time' => 0.161944,
  'redirect_time' => 0,
  'request_headers' =>
  array (
    0 => 'Cache-Control: no-cache',
    1 => 'Pragma: no-cache',
    2 => 'Content-Length: 1643',
    3 => 'Expect:',
  ),
)