Can cc suddenly turn corrupt?

I'm not an expert on custom content, and I know nothing about CC Magic. But I do know there's often an issue with .package files on FAT32-formatted drives. I don't know what it is, and the one time I tested thoroughly, NRaas mods were fine. It was only TS4 cc that couldn't be read. (I used a symbolic link to move the user data folder to an external drive.) When TS4 threw the error, it had the same ._ in front of each file name that it flagged as corrupt. On the other hand, the files were fine once they were back on an internal drive, so the files weren't permanently damaged.

I don't know how to you might go about fixing your files, unfortunately. I'm just throwing this out there in case someone else who could otherwise help better doesn't know what to make of the period-underscore in front of the file names. I mean, you could try simply renaming them, I guess, to remove the ._ that shouldn't be there. Other than that though, I have no idea.

@puzzlezaddict Thank you for your quick reply!
Since you said they were fine once they were back on the internal drive, I wonder if the cc is actually corrupted.. I might take a chance and just play the game anyway (not sure though lol).

The ._ only shows in Delphy's s3pe. My actual cc files don't have those ._ so I sadly can't rename them. Thanks anyway though! :)

I have this EXACT problem with sims 3! It's not very cc friendly and files seems to corrupt easily out of nowhere! And I tried playing them with the corrupt cc and all kind of weird glitchy stuff happens so not a good idea ??

@Babykittyjade I fixed it! I copied all the cc that turned corrupt and paste them into another folder (just on my desktop). I deleted all the corrupt cc in my CC Magic.

Then I used the program by Delphy to scan the corrupt cc in the folder (the one on my desktop). It suddenly isn't corrupt anymore! (No idea why lol)
I put this cc back into CC Magic. Check it again with the program by Delphy just to make sure it didn't turn corrupt again. It didn't! :D