Hi, using the stock tex2lyx
tex2lyx 2.3.6.2 (2021-01-07) Configuration Host type: x86_64-apple-darwin18.7.0 [...] I get this el@p:~/Desktop> tex2lyx -c beamer a Creating file /Users/el/Desktop/a.lyx Could not open input file "/Users/el/Desktop/a" for reading. el@p:~/Desktop> tex2lyx -c beamer a.tex Not overwriting existing file /Users/el/Desktop/a.lyx el@p:~/Desktop> tex2lyx -f -c beamer a.tex Overwriting existing file /Users/el/Desktop/a.lyx Should it not check for reading before creating? Never mind that appending a '.tex' if there is no extension in the command but a file with the extension in the directory. el -- To email me replace 'nospam' with 'el' -- lyx-devel mailing list lyx-devel@lists.lyx.org http://lists.lyx.org/mailman/listinfo/lyx-devel