Cellprofiler: ExportToSpreadsheet error when filtering objects in IDSecondary

[bethac07]

In a pipeline which has an IDSecondary module in it where you're filtering primary objects based on the secondary objects (aka when Discard secondary objects touching the border of the image? and Discard the associated primary objects? are both set to "Yes"), trying to only export specific measurements in ExportToSpreadsheet using the Press to select measurements option box gives the following error:

Traceback (most recent call last):
  File "CellProfiler\cellprofiler\gui\moduleview.py", line 878, in on_press
  File "CellProfiler\cellprofiler\setting.py", line 1977, in populate_choices
  File "CellProfiler\cellprofiler\setting.py", line 1974, in valid_mc
TypeError: argument of type 'ObjectNameSubscriber' is not iterable

If you export all measurements it works fine, and the Press to select measurements option works fine if Discard the associated primary objects? is set to "No", so it's only when the two combine you end up with problems.

Pipeline attached (and images, though those shouldn't be necessary to validate).

IDSecondary_ExportToSpreadsheet.zip

[bethac07]

Appears to be fixed in 3.1.9, probably by #3685

[tischi]

Yes, in 3.1.9 we do not get this error.