Re: Sims 3: Delete piggybacked package files?
@hunnypooh1 When you install a Sims3Pack, its contents create or are added to a .dbc bundle in DCCache, inside your TS3 game folder in Documents. If the pack also contains a sim, there will be a corresponding .package file in SavedSims or Library, depending on whether the sim appears as a CAS template or a household in the bin. (Multi-sim households and lots you've downloaded or created also get their own files in Library; a store or custom world will have a file in InstalledWorlds.)
So there are a few ways you could go about this. The first, and easiest, is to uninstall the skin (the term for what you described is "default replacement skin") from the launcher. Go to the installed content tab, scroll through the items until you find its listing, and uninstall it. This works most of the time.
But if you have too many items, or some bad cc, the skin many not show up, or the launcher itself could crash. In that case, you can move every file inside DCCache to your desktop, and put back only the .dbc file with the highest number. They're numbered in sequential order, starting with zero. (The .ebc files are store content and can be set aside for now.) So if you have six of them, your newest one would be .dcdb5.dbc. After you move that back into DCCache, rename it to dcdb0.dbc; otherwise, the launcher won't read it. Then the launcher's installed content tab will list only the items added to that particular bundle, so you can find the skin more easily. When you've uninstalled it, make sure to renumber the .dbc file before adding the others back in.
The other way to go about this is to keep the .package files in Library but get rid of the .dbc bundle entirely. The .package files don't contain the cc files attached to the sims, just references, so if the cc isn't installed, the sims lose those items. This is one way you can get rid of bad custom content, especially if it's not showing up in the launcher.
No matter how you go about this, you may have to take the affected sims into CAS and reassign a base game skin; otherwise, they may have no skin at all (they'd be completely black). And if you really want to make sure the cc is gone, you should delete everything in DCBackup except for ccmerged.package, which is necessary for your premium store content to work. The other files contain data on your custom content; their purpose is to attach the relevant cc to any exported Sims3Packs. But if you're not going to upload sims that use cc anymore, these files are completely useless.