Hi,
and here a 1st problem including (some) JPGs which are created/converted using "convert"
from ImageMagick (using ImageMagick-6.8.6.9-2.28.1.x86_64 from openSUSE 13.1 -- just in case...)
btw. -- I'm using a decent standalone context installation, full log file attached...
running "context j1.tex" I get
LuaTeX warning: arithmetic: number too big
graphics > inclusion > limiting natural dimensions of './IMG_9712c1_bad.jpg' (height)
tex error > error on line 1 in file /home/harald/tex/Indien-2015/j1.tex: ! Dimension too large
for "IMG_9712c1_bad.jpg" which was generated with this command:
convert -resize 632x330 IMG_9712c1_ok.jpg IMG_9712c1_bad.jpg
using other tools I can't find any problem with that "bad" jpg, only context complains:-(
what's wrong with "IMG_9712c1_bad.jpg" ?also with pdftex