I was going to ask what application so I could add "/usr/local/postinst/libgdk-pixbuf2.0-0 trigger" to it (this is the Debian startup script command that does the same), but adding this to sce-load would prevent any future issue and prevent having to hunt down offending packages and create individual startup scripts.
The below logic will let sce-load run this command when needed, like we do depmod when there are kernel modules in an SCE being loaded:
Basically, if the below directory exists inside an SCE, then run "/usr/local/postinst/libgdk-pixbuf2.0-0 trigger"
/usr/lib/i386-linux-gnu/gdk-pixbuf-2.0/2.10.0/loaders/