Thanks for the hint.
The crash I eliminated with a delay 1 between send and receive objects. Very strange that it helped but that was the only idea I had.

On Sat, 1 Sep 2018 at 00:26, IOhannes m zmölnig <zmoelnig@iem.at> wrote:
On 8/31/18 2:42 PM, Csaba Láng wrote:
> Here I have already no method for Gemstate.

that's pretty simple:
languagechoice.pd -> [pd ping1] -> [pd map]

the [inlet] (1st outlet of [pix_blob] is a GemList, which you hooked up
to a [* 2] object.
(btw, when printing to the Pd-console (that is: without the "-stderr"
flag), you can Ctrl-click most (red) error-messages, and Pd will
highlight the object that has emitted them.)

fgmadsr
IOhannes

PS: it doesn't explain the crash though.