41z module "NO LIBRARY"

[supernumero]

I recently discovered the existence of the Ángel's 41z module for the 41c. (I also found Sandmath, but 41z seems far easier to explore first.)

I (sadly) don't have a 41c, so I'm running an emulated i41cx on an iPad. Upon initialization, i41cx downloads a huge collection of modules. Since I don't actually own a 41c, it's not a calculator I'm as familiar with as I'm with, say, the 42s, the 34s, or the RPL machines 28/48/49/50. However, I don't think I'm doing anything obviously wrong, at least as far as I can tell from the 41z manual. Other people have reported running 41z just fine in this forum.

I've run into a show-stopping issue. I'm loading 41z into port 1 (ports 2-4 empty). When I do that, the calculator display reads "NO MODULE". Whatever ZANYTHING function I try to execute (e.g., a simple ZENTER^), I get the error message "NO Z-STACK". So, clearly, something goes wrong from the very beginning, as announced by the "NO MODULE" message.

Just to make sure, I re-downloaded all the modules to ensure I have the latest version (actually, there are two versions of the 41z module, one called 41z and another 41z4, but "NO MODULE" happens with either). I also believe I have the latest version of i41cx---I updated the app just a day or two ago.

Perhaps somebody can confirm this behavior, or help me out, please?

Thanks,
SN