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Hi, It seems tostring is calling itself indefinitely, causing it to crash: C stack overflow stack traceback: [C]: in function 'tostring' ...14.10.07/tex/texmf-context/tex/context/base/lpdf-ini.lua:388: in function <...14.10.07/tex/texmf-context/tex/context/base/lpdf-ini.lua:371> [C]: in function 'tostring' ...14.10.07/tex/texmf-context/tex/context/base/lpdf-ini.lua:347: in function <...14.10.07/tex/texmf-context/tex/context/base/lpdf-ini.lua:332> [C]: in function 'tostring' ...14.10.07/tex/texmf-context/tex/context/base/lpdf-ini.lua:347: in function <...14.10.07/tex/texmf-context/tex/context/base/lpdf-ini.lua:332> [C]: in function 'tostring' ...14.10.07/tex/texmf-context/tex/context/base/lpdf-ini.lua:347: in function <...14.10.07/tex/texmf-context/tex/context/base/lpdf-ini.lua:332> [C]: in function 'tostring' ... ...14.10.07/tex/texmf-context/tex/context/base/lpdf-ini.lua:347: in function <...14.10.07/tex/texmf-context/tex/context/base/lpdf-ini.lua:332> [C]: in function 'tostring' ...14.10.07/tex/texmf-context/tex/context/base/lpdf-ini.lua:347: in function <...14.10.07/tex/texmf-context/tex/context/base/lpdf-ini.lua:332> [C]: in function 'tostring' ...14.10.07/tex/texmf-context/tex/context/base/lpdf-ini.lua:347: in function <...14.10.07/tex/texmf-context/tex/context/base/lpdf-ini.lua:332> [C]: in function 'tostring' ...14.10.07/tex/texmf-context/tex/context/base/lpdf-ini.lua:711: in function 'pdfshareobjectreference' ...14.10.07/tex/texmf-context/tex/context/base/lpdf-ano.lua:574: in function 'prerollreference' ...14.10.07/tex/texmf-context/tex/context/base/node-ref.lua:409: in function 'setreference' ...14.10.07/tex/texmf-context/tex/context/base/node-ref.lua:597: in function 'injectcurrentreference' [\directlua]:1: in main chunk