Could anyone confirm the issue in Windows?

Here, in both of examples below, the file is successfully attached in Windows: \setupinteraction[state=start] \setupinteractionscreen[option=attachment] \setuppapersize[A5, landscape] \setuppagenumbering[location=] \starttext File: \attachment[file={c:/usr/work/examples/pic.pdf}] \stoptext % % without braces % \setupinteraction[state=start] \setupinteractionscreen[option=attachment] \setuppapersize[A5, landscape] \setuppagenumbering[location=] \starttext File: \attachment[file=c:/usr/work/examples/pic.pdf] \stoptext Best, Akira