unable to load any modules

[drhepp]

Hi, I'm really excited to start using PyRx. Believe I've got everything setup correctly, I'm able to load RxLoader25.1.arx (using AutoCAD 2026), and can see the PYLOAD/PYRELOAD etc. commands. PYRXVER indicates <2.2.006.20250818> loaded.

So it feels like I'm very close to getting this to run, however I get a "internalLoad_host_init_py failed" message during the PyRx load.

From debug through PyRx, this error results from PyImport_Import() failing to load _host_init.py (returns a nullptr). Seems the _host_init.py location is part of the PyRxApp loadedModulePaths so it should be able to load it, also seems the modname (without extension etc.) is getting set correctly. Execution of method.mod.reset(PyImport_Import(method.modname.get())) in the loadPythonModule() is where it falls apart. Likewise PYLOAD fails (at the same location) to load any Python modules manually.

I've tried to wrestle through it, but would really appreciate your support to get things running.

Let me know if you need additional details.

Thanks in advance!

[CEXT-Dan]

Hi, I’m assuming that you are not installing from PYPI, and that you are compiling? It this correct?

[drhepp]

I started with the binaries straight from PiPy at first, with the same result. Started build/debug to try resolve the error (unsuccessfully lol)

[CEXT-Dan]

Okay, lets work in the PyPi side first.

You ran the pip to install the package. Then

_APPLOAD
%localappdata%\Programs\Python\Python312\Lib\site-packages\pyrx\RxLoader25.1.arx

Is this correct?

First, we’ll turn on the logging, in AutoCAD, (setenv "PYRX_LOG" "1").
Close and restart AutoCAD, then load the loader. Then run
PYRXLOADLOG

[drhepp]

i got it running, not sure what to say... struggled with it for quite a while, i must have messed up some of the package versions or dependencies as I tried to work through the initial issues i was having with it. just reinstalled the dependencies now and was able to load!

thanks for your help!

[CEXT-Dan]

Yay! we can follow up with building later if you want. It’s kind of hard to switch between a dev mode and installed. Basically, you have to remove or reinstall the pypi packages, which from the sounds of it, you just did.

Enjoy : )