Lingering Code Snippet Error in mph_figure_editor.py

[aaronayres35]

When code is run get very similar error to #828 which includes a fix.

$ python mpl_figure_editor.py
02:22:10 PM: Debug: Adding duplicate image handler for 'Windows bitmap file'
02:22:10 PM: Debug: Adding duplicate animation handler for '1' type
02:22:10 PM: Debug: Adding duplicate animation handler for '2' type
02:22:10 PM: Debug: Adding duplicate image handler for 'Windows bitmap file'
02:22:10 PM: Debug: Adding duplicate animation handler for '1' type
02:22:10 PM: Debug: Adding duplicate animation handler for '2' type
02:22:10 PM: Debug: Adding duplicate image handler for 'Windows bitmap file'
02:22:10 PM: Debug: Adding duplicate animation handler for '1' type
02:22:10 PM: Debug: Adding duplicate animation handler for '2' type
Traceback (most recent call last):
  File "/Users/aayres/.edm/envs/general-use/lib/python3.6/site-packages/traitsui/wx/view_application.py", line 152, in OnInit
    args=self.args,
  File "/Users/aayres/.edm/envs/general-use/lib/python3.6/site-packages/traitsui/view.py", line 462, in ui
    ui.ui(parent, kind)
  File "/Users/aayres/.edm/envs/general-use/lib/python3.6/site-packages/traitsui/ui.py", line 246, in ui
    self.rebuild(self, parent)
  File "/Users/aayres/.edm/envs/general-use/lib/python3.6/site-packages/traitsui/wx/toolkit.py", line 125, in ui_live
    ui_live.ui_live(ui, parent)
  File "/Users/aayres/.edm/envs/general-use/lib/python3.6/site-packages/traitsui/wx/ui_live.py", line 52, in ui_live
    _ui_dialog(ui, parent, BaseDialog.NONMODAL)
  File "/Users/aayres/.edm/envs/general-use/lib/python3.6/site-packages/traitsui/wx/ui_live.py", line 88, in _ui_dialog
    BaseDialog.display_ui(ui, parent, style)
  File "/Users/aayres/.edm/envs/general-use/lib/python3.6/site-packages/traitsui/wx/ui_base.py", line 71, in display_ui
    ui.owner.init(ui, parent, style)
  File "/Users/aayres/.edm/envs/general-use/lib/python3.6/site-packages/traitsui/wx/ui_live.py", line 203, in init
    sw = panel(ui, window)
  File "/Users/aayres/.edm/envs/general-use/lib/python3.6/site-packages/traitsui/wx/ui_panel.py", line 272, in panel
    panel, content[0], ui
  File "/Users/aayres/.edm/envs/general-use/lib/python3.6/site-packages/traitsui/wx/ui_panel.py", line 431, in fill_panel_for_group
    panel, group, ui, suppress_label, is_dock_window, create_panel
  File "/Users/aayres/.edm/envs/general-use/lib/python3.6/site-packages/traitsui/wx/ui_panel.py", line 587, in __init__
    self.add_items(content, panel, self.sizer)
  File "/Users/aayres/.edm/envs/general-use/lib/python3.6/site-packages/traitsui/wx/ui_panel.py", line 1015, in add_items
    max(0, border_size + padding + item.padding),
wx._core.wxAssertionError: C++ assertion "!(flags & wxALIGN_CENTRE_VERTICAL)" failed at /Users/robind/projects/bb2/dist-osx-py36/build/ext/wxWidgets/src/common/sizer.cpp(2077) in DoInsert(): Vertical alignment flags are ignored in vertical sizers
OnInit returned false, exiting...

The change that #828 suggests, seems to have been already made by PR #829, but somehow I still see this error here.

Also this error was a part of the problems mentioned in issue #1036 but was not addressed in PR #1044

[aaronayres35]

In my repo, this line is changed, but when I follow the link to

"/Users/aayres/.edm/envs/general-use/lib/python3.6/site-packages/traitsui/wx/ui_panel.py", line 1015

that is given in the traceback, I see that this change has not been made. Is this because this change hasn't been put into the latest release or something?
Could you possibly explain to me why these two (my ui_panel.py file in my local repo and file that was linked in traceback) might be different tomorrow @rahulporuri ?

[aaronayres35]

This was due to a local environment issue. This was fixed by #829