the dlfltxb bundle contains a file dlfltxbmarkup-sample.cfg it is currently placed inside dlfltxb.doc.tar.lzma and thus ends up in texmf-dist/doc/latex/dlfltxb/dlfltxbmarkup-sample.cfg it should be moved to dlfltxb.tar.lzma and placed in texmf-dist/tex/latex/dlfltxb/ /daleif