Sims error code [de4ee14:29f00e76:0000000:4b0d852b]

@Sophieee09  No, there's no software you can use to fix your mods once they're broken like this.  Data recovery can be unreliable, but even copying mods from one drive to another doesn't always work, unfortunately.  I've seen mods and custom content be corrupted during the transfer even when both computers were entirely intact.

If you still have access to the old drive and can manipulate files on it, you can try zipping the Mods folder before transferring it.  But other than that, you're unfortunately going to need to redownload the mods and cc items that are broken.

@Sophieee09  Let me know how it goes.

picture of the broken cc in mod conflict 

@Sophieee09  The Mod Conflict Detector is a somewhat limited tool, and although I don't know a lot about how it works, I wouldn't necessarily trust its assessment either way.  The key here is whether your content works in-game.  If it does, you can keep it.  You'll unfortunately need to download fresh copies of any files that still aren't loading.

@Sophieee09  Have you let the game generate a new Mods folder yet?  If not, please do so now: move the existing Mods folder to the desktop and start the game to create a new one.  Then move over one or two files: put them directly into Mods, not inside a subfolder, and let me know how it goes.

If some of your files don't work in the new Mods folder, then unfortunately there's nothing left to do except download them again.