Crash Report: Export png crash on windows

[GeoDaTester]

Details:
vs: 1-8-15-29
Open TableFrame.
Open MapFrame.
Check auto update:
In GdaFrame::OnHelpAbout()
Error: XRC error: 784: unknown style flag 'wxALIGN_CENTRE'
In GdaFrame::OpenQuantile(5)
Open VariableSettingsDlg
Error: XRC error: 1174: horizontal alignment flag 'wxALIGN_RIGHT' has no effect inside a horizontal box sizer, remove it and consider inserting a spacer instead
Error: XRC error: 1181: horizontal alignment flag 'wxALIGN_LEFT' has no effect inside a horizontal box sizer, remove it and consider inserting a spacer instead
Click VariableSettingsDlg::OnOkClick:
hr60
Open MapFrame.
Open ExportDataDlg in its Init()
Click GdaFrame::OnSaveCanvasImageAs

[YidanJ-Wu]

Geoda 1.8.15.29
Windows 8
Here is the screenshot of the crash:

[lixun910]

Thank you, Julie! I just put a 1.8.15.31 binary for windows in dropbox. please verify this issue using 1.8.15.31.

let me know any issues.

[YidanJ-Wu]

GeoDa 1.8.15.31
Windows 8
Confirmed