Core processing error after processing ~500 image sets

Hi,

I’ve installed CellProfiler 2.2.0 on Mac OS X (El Capitan), and over 3450 image sets were applied.
When ~500 image sets were processed, CellProfiler always stopped by core processing error.
It shows message like this;

Traceback (most recent call last):
File “wx/_core.pyc”, line 16766, in
File “/Applications/CellProfiler.app/Contents/Resources/lib/python2.7/cellprofiler/gui/pipelinecontroller.py”, line 2697, in on_stop_analysis
File “/Applications/CellProfiler.app/Contents/Resources/lib/python2.7/cellprofiler/measurements.py”, line 364, in getitem
File “/Applications/CellProfiler.app/Contents/Resources/lib/python2.7/cellprofiler/measurements.py”, line 960, in get_measurement
File “/Applications/CellProfiler.app/Contents/Resources/lib/python2.7/cellprofiler/utilities/hdf5_dict.py”, line 375, in getitem
File “/Applications/CellProfiler.app/Contents/Resources/lib/python2.7/cellprofiler/utilities/hdf5_dict.py”, line 34, in new_getitem
File “h5py/_objects.pyx”, line 54, in h5py._objects.with_phil.wrapper (/Users/travis/build/MacPython/h5py-wheels/h5py/h5py/_objects.c:2458)
File “h5py/_objects.pyx”, line 55, in h5py._objects.with_phil.wrapper (/Users/travis/build/MacPython/h5py-wheels/h5py/h5py/_objects.c:2415)
File “/Applications/CellProfiler.app/Contents/Resources/lib/python2.7/h5py/_hl/dataset.py”, line 384, in getitem
File “h5py/h5d.pyx”, line 116, in h5py.h5d.DatasetID.dtype.get (/Users/travis/build/MacPython/h5py-wheels/h5py/h5py/h5d.c:2177)
File “h5py/h5d.pyx”, line 118, in h5py.h5d.DatasetID.dtype.get (/Users/travis/build/MacPython/h5py-wheels/h5py/h5py/h5d.c:2100)
File “h5py/_objects.pyx”, line 54, in h5py._objects.with_phil.wrapper (/Users/travis/build/MacPython/h5py-wheels/h5py/h5py/_objects.c:2458)
File “h5py/_objects.pyx”, line 55, in h5py._objects.with_phil.wrapper (/Users/travis/build/MacPython/h5py-wheels/h5py/h5py/_objects.c:2415)
File “h5py/h5d.pyx”, line 309, in h5py.h5d.DatasetID.get_type (/Users/travis/build/MacPython/h5py-wheels/h5py/h5py/h5d.c:4204)
RuntimeError: Unable to register datatype (Can’t insert duplicate key)

Do you have any idea?

Kenji