Errors in FCD Analyzer

2017-11-02 08:56:47,688 - ERROR [proc:27455]  - tvb.core.operation_async_launcher - object of type 'numpy.float64' has no len()
Traceback (most recent call last):
  File "/WORK/TVB/tvb-root/framework_tvb/tvb/core/operation_async_launcher.py", line 80, in do_operation_launch
    OperationService().initiate_prelaunch(curent_operation, adapter_instance, {}, **PARAMS)
  File "/WORK/TVB/tvb-root/framework_tvb/tvb/core/services/operation_service.py", line 355, in initiate_prelaunch
    self._handle_exception(excep1, temp_files, msg, operation)
  File "/WORK/TVB/tvb-root/framework_tvb/tvb/core/services/operation_service.py", line 333, in initiate_prelaunch
    result_msg, nr_datatypes = adapter_instance._prelaunch(operation, unique_id, available_space, **params)
  File "/WORK/TVB/tvb-root/framework_tvb/tvb/core/adapters/abcadapter.py", line 89, in new_function
    return func(*args, **kw)
  File "/WORK/TVB/tvb-root/framework_tvb/tvb/core/adapters/abcadapter.py", line 318, in _prelaunch
    result = self.launch(**kwargs)
  File "/WORK/TVB/tvb-root/framework_tvb/tvb/adapters/analyzers/fcd_adapter.py", line 113, in launch
    [fcd, fcd_segmented, eigvect_dict, eigval_dict, Connectivity] = self.algorithm.evaluate()
  File "/WORK/TVB/tvb-root/scientific_library/tvb/analyzers/fcd_matrix.py", line 128, in evaluate
    triangular = np.triu_indices(len(fc), 1)
TypeError: object of type 'numpy.float64' has no len()