Cannot generate transparent files

[maurimo]

Cannot generate transparent files

[zevero]

I stepped over the same problem.
As you can see in kanimaji.py:508 you need to set
GIF_BACKGROUND_COLOR = 'transparent'
as well.
This is checked on line 442 and background options are set differently. This is all working ... however: In the end I get the following error:

convert ..... -dispose previous -layers OptimizePlus 'kanji/0f9b1_anim_tmp1.gif'
convert 'kanji/0f9b1_anim_tmp1.gif' \( -clone 0--1 -background none +append -quantize transparent -colors 63 -unique-colors -write mpr:cmap +delete \) -map mpr:cmap 'kanji/0f9b1_anim_tmp2.gif'

convert-im6.q16: width or height exceeds limit `kanji/0f9b1_anim_tmp1.gif' @ error/cache.c/OpenPixelCache/3802.
Error running external command

[zevero]

Its the second convert, that is failing ... however this second convert is working on normal intransparent gifs and not changed in any way...