Ok, better late than never. :)
I have 2 updates here:
1 - You can permanently set a specific 3ds Max version to load a specific Corona version:
- Go to "Edit the system environment variables" in Windows (you can just type that into the Start menu)
- Add a new System Variable
- name: CORONA_3DSMAX_2023_LOAD_PATH
- value: C:\my\path\to\corona\version\Corona\Corona Renderer for 3ds Max\2023
(replace 2023 with your 3ds Max version)
This also works when using command-line rendering like Backburner, Pulze, etc, so it should work fine regardless of the order in which you install your Corona versions.
More about multiloaders:
https://docs.chaos.com/display/CRMAX/Multiloaders2 - In Pulze, you can click the red "Corona..." button when a job is reporting an error. This will override the version requirement to ANY Corona version, so the rendering will just start even if Pulze does not detect a match between the version of Corona required by the file and currently detected in the system.