A new version of the HP-41Z Complex Number Module is already available for downloading (see the web's other site).
The new version includes 64 Complex Numbers functions, expanding on the original set. Now with full LASTZ support in every function. It includes a mass-key assignment option (ZKEYS) for all Complex versions of the standard functions. It also fixes the "SST discrepancy" - wrong results in SST execution.
This version is pretty much the *final* one. A complete source code listing is also available, in case you're interested in looking under the hood.
I'll welcome any feedback you may have!
Best,
ÁM.