game crashes when trying new replacements on manual saves?

It turns out, if you have used some previous model replacements in that particular savefile, you would need to enable them and not the newest one you got
Apparently, the game knew what kind of models they were the moment you saved your game, so when you change to other replacements it just says "huh, where are the models? this is no good..." and then proceeds to crash.
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My suggestion is, if you want to make a save, try it to be vanilla HL2 without any model replacements, this way you cold prevent this bug from appearing again, or make sure you stick to the replacements you chose for the rest of your campaign, or instead, make another save with said replacement models.

Whether the crash has been made because any addons, I'm pretty sure this is smth that could happen to the most of us, since we can think "oh, so i can use any models with any saves, cool", but thats pretty far from the truth. The game itself works differently when managing workshop content, and more so with the latest popularity of it.

Well, that's it for today, I hope I have helped you guys or at least informed you about future crashes. Don't forget to drink water and save me for future references :3c