For v1.0.3, I'm sometimes running into the following error:

Failed to load mods: Error in assignID: recipe with name 'planetaris-advanced-raw-quartz' does not exist.

Source: planetaris-advanced-raw-quartz (technology).

For some reason this broke in between two sessions; it loaded fine a couple hours ago and all of a sudden it appears to have decided to break. I'm not sure what could cause this behaviour.

Loading into my save with this mod now disabled does list this research as removed however. I have not started on Hyarion yet.

Looks like i got same

Failed to load mods: Error in assignID: recipe with name 'planetaris-advanced-raw-quartz' does not exist.
Source: planetaris-advanced-raw-quartz (technology).
Mods to be disabled:
• planetaris-hyarion (1.0.3)

yeah same here; looks like that this: https://github.com/Syen-ce/planetaris-arig/blob/ee7bec02486c9579f77797e763fda9c7907d5fe3/changelog.txt#L8 ("Removed advanced quartz recipe and moved to hyarion") was indeed removed from Arig in https://github.com/Syen-ce/planetaris-arig/commit/3d5b44579d86211e930e7b1deb8a0604b7edf1ec, but not introduced in Hyarion as Arig's changelog claims...

so the recipe is gone, probably has to be reintroduced to https://github.com/Syen-ce/planetaris-hyarion/blob/main/prototypes/recipe.lua...

Edit: yeah when I locally hack the removed recipe into Hyarion's recipe.lua, Factorio starts again... :-)

Sorry! Fixed

:-) thank you!

Awesome :D thanks a ton!