[NTG-context] Layers don't repeat in Mk IV

I've been trying to use layers for a simple logo that repeats on all pages. Something along the lines of the code below: \definelayer[mybg][x=0mm, y=0mm,width=\paperwidth, height=\paperheight,repeat=yes] \setlayer [mybg] [hoffset=1cm, voffset=1cm] {\framed[frame=on, width=3cm, height=2cm]{\externalfigure[cow][width=1cm] }} \setupbackgrounds[page][background=mybg] \starttext \dorecurse{6}{\input tufte\par} \stoptext It works as expected using Mk II but does not work under Mk IV: The layer appears only on the first page. Please Help, Derek