Published a test image (gnu logo) on # , if anyone if you runs it now, feel free to grab it and let me know how that worked..
The file URI is :

gnunet://fs/chk/K346AECTH7IKJ4JJF5NR9Q3LR69ATPVPDDMBLB5MBV8HNF8GGU8L57VGHK5PK0711KIUD9VHA0CKP6H6OQMB6BQUGAJASM677JG49RO.F81BUIK7E2NMC0OMPHQHT401AI13NMSRO8AT35CU71ES8JSESJ33SCVKBN4AP914TO3DL2AMVPNG7N378GMR7TKIFJRLH6FPO2PA630.20971