Argument of \@xverbatim has an extra }
which then produces various later errors, and the document doesn't compile. The other options, including double frame, work fine. This is with both 2.3.4.4 versions (64 bit and 32 bit) on windows 10.
Andrew -- lyx-devel mailing list lyx-devel@lists.lyx.org http://lists.lyx.org/mailman/listinfo/lyx-devel