Hi,

the latest update may have introduced problems for xml processing :

For a document I could convert with version 2021.10.24 21:45 without problems gives me now this error :

%%%%%%%%%%%%%%%%%%%%%%%%%
...
structure       > sectioning > title @ level 2 : 0.0 -> \documentvariable {title}
fatal lua error:

        registered function call [929]: ...ext/tex/texmf-context/tex/context/base/mkiv/scrn-ref.lua:31: attempt to call a nil value (upvalue 'expandcurrent')
stack traceback:
        ...ext/tex/texmf-context/tex/context/base/mkiv/scrn-ref.lua:31: in function <...ext/tex/texmf-context/tex/context/base/mkiv/scrn-ref.lua:27>
        (...tail calls...)

mtx-context     | fatal error: return code: 1
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Not sure what is going wrong. Any hints how I can start debugging? Any ideas what could have caused that change?

(Ok, let's build a MWE..)

Best,
Denis