Data Mismatch but no mods and I can play just fine. Ignore the error?

[Frost]

Currently Getting a data mismatch error and I haven't the slightest clue on why. I've never installed a mod, and I don't think any of the files are corrupted because I can play the game just fine. I've played close to an hour and a half to two just a couple days ago without any hiccups. Just wondering if there's anyway to figure out on what to do to get rid of the error. I've validated the files and nothing came up. I deleted my old save as well to see if that was the case but the error still pops up. It's popped up the last 3 or 4 times I've booted up the game.