Greetings,
This simple statement
Dx{#}::LaTeXForm{"Dx"}.
raises a syntax error
SyntaxError: '{' was never closed
I'm running Cadabra version 2.5.2. build 3043.2a1d62739a.
Also, this version of Cadabra compiles fine under MacOS Sonoma 14.5.
Cheers, Leo