CDK fatal Error help me please

I keep encountering an error whenever I try to save my completed CDK mission as a BLK file, which is really frustrating because I spend 3-4 hours working on it, and it ends up being unusable. Could you please help me figure out how to fix this issue? I have installed CDK in the War Thunder folder.
스크린샷 2025-01-20 172632
스크린샷 2025-01-20 172646

god damn just reinstall the game, bro.

Bro, this is my third reinstall, and I’m losing it. Hook me up with a fix, I’m begging you