Dirt 2 Modding Error

I’ve recently started playing Dirt 2 after a while and I’ve already completed the game before but I wanted to mod the save this time around. Every time I go to mod my save (I’ve done this without the game update and with), it pops up with two errors, one being a Horizon error and one being a Windows error because of Horizon having an error which happens when I click “OK” on the first error.

Horizon error:

Windows error:

No I’m not a diamond member but I’m assuming you don’t need to be one to use this tool because it doesn’t give you a prompt to become one beforehand like the others do when you need to be one.

EDIT: I’ve also tried opening Horzion as an Administrator, it still does the same thing.

Does this happen right after the tool pops up?