Error: "Frame substitution recur..." while importing insta360 pro II video files post insta360 stitcher. Fixes have not helped

First, here is my setup:

Rig:

• Windows 10
• AMD Ryzen ThreadRipper 3970x 32-core Processor (64 CPUs)
• Nvidia GeForce RTX 3080 Ti
• 125 GB Ram
• New installation of Premiere pro 2021 with updated importer files as requested here and downloaded here

When I import a video file that has already been processed in insta360 stitcher, and that look like this:

I start getting this error while premiere is trying to "Generate peak file", I don't even need to drag the file into the timeline before it starts complaining. I have been dealing with this problem for over a day and am at my wits end, here is what I have tried and where I get it from:

• Placing files in the C drive instead of D drive suggested here
• Disable Cuda and used "Software only" as the Playback and Rendering setting suggested here and here
• Delete render files - this wasnt possible because it is greyed out but suggested here

Additionally I changed my graphics card Drivers to Studio Driver instead of Game-ready driver, this did not work either

The next thing I can try is to reroll back to pre 14.4 9 but I would really rather not have to do this.

==Edit==

I installed v 14.3 and got the same error so I installed 14.2 where i also got the same issue and then moved onto 14.1 where I am still getting the same issue. So this downgrade also is not working:

I am really at a loss as to what to try next, any suggestions would be most welcome.

Thank you.

I finally got this fixed, it turns out it was the plugin that came with 3.0.0 version of insta360 stitcher + updates.

Insta360 sent me their updated Stitcher 3.1.2 which comes with a brand new plugin but is not yet listed on their website. They have given me permission to post the file here for anyone who wishes to download it.

https://static.insta360.com/Insta360Stitcher/Insta360Stitcher_Winx64_3.1.2_build_202012301001.exe