gtk-update-icon-cache.exe is not work?

["michinari.nukazawa" <michinari nukazawa gmail com>]

Hello.
I develop vecterion vector graphics editor in GTK3/cairo.
https://github.com/MichinariNukazawa/vecterion_vge

I get this error message.
===
(vecterion_vge.exe:5292): Gtk-WARNING **: Could not load a pixbuf from 
icon theme.
This may indicate that pixbuf loaders or the mime database could not be 
found.
**
Gtk:ERROR:gtkiconhelper.c:493:ensure_surface_for_gicon: assertion 
failed: (destination)
===


I try update gtk library 3.10.4-20131202 (official) to 
3.22.15-1-20170610 (unofficial).
new binary (is under uri) by https://twitter.com/niloufarjp/ and my 
repackage script.

I already fix loaders.cache need libpixbufloader-svg.dll .
and tryed using gtk-update-icon-cache.exe is successed.


Why icon load error but loaded libpixbufloader-svg.dll and 
gtk-update-icon-cache.exe is successed.
I drop other need library/binary?
I forget other process?


gtk library:
https://box.yahoo.co.jp/guest/viewer?sid=box-l-m4xqci277itzhqw6phs2dmo7pi-1001&uniqid=891184c1-d3f2-451d-9d01-a42fa522643c#du%3D891184c1-d3f2-451d-9d01-a42fa522643c%26ds%3Dbox-l-m4xqci277itzhqw6phs2dmo7pi-1001%26vt%3Dpublic%26lf%3Dlist%26ls%3D1%26lm%3D20
repackage script:
https://github.com/MichinariNukazawa/vecterion_vge/blob/master/deploy/win/gtk_library/gtk_library_repackage.sh

Thanks.