I need help with this File. I am unable to render the image created because mantra is unable to find the geometry.
I am working on a training aid for guitar novices, including myself. I still have a lot of coding to do.
I have tried rendering on three different machines. Two have indie licenses, and one has an apprentice. They all display the geometry, but none render.

I don't know what is wrong.

Aurora R12
Processor 11th Gen Intel(R) Core(R) i5-11400F @2.60GHz 2.60GHz
Installed RAM 64.0 GB (63.7 usable)

Nvidia Gforce RTX 3060 with 2 SamsungLU28R55 30 Hz 32-bit color

Windows 11 Home Version
23H2

Houdini Version 20.5.370

In your file if you enable mate-shading and ray in obj context of geo1 it Works. Nice idea, give us More Details ...

There is a lot of information about how keys, scales {major, minor, pentatonic, diatonic, chromatic, etc.}, modes, and chords relate in one way or another.
I am working on a game in Unreal Engine that will initially teach a student how to recognize intervals and chords, both harmonic and melodic.
The game will play either a chord or a series of tones, after which it will show three panels containing a stave, a tab, and a textual representation. One panel will comprise four panes/choices, of which only one will be correct. The other two will have the correct answer in different forms. While playing the game, the player may connect the various representations and learn other skills.
Other skills taught will include where to find the notes on the fretboard, how to build chords, and how to create arpeggios. As I progress with my Python and Blueprints abilities, I will add more skill sets.

After I get the proof of concept working in Houdini and Python, I will port it to Unreal. Think of Rocksmith without all the fancy graphics. I will add practice routines when I figure out how to implement Fast Fourier transformations in Unreal.
Lots of plans, little time to work on them.

I am curious to know if the game will incorporate a diverse range of guitar sounds, such as Jazz, Classical, Metal, Rock, or Grunge, to enhance the auditory experience. Or is the game primarily centered on teaching how chords are constructed and exploring different aspects of music theory? Either way, it's a fascinating concept, and I wish you the best of luck in its development.