1. Do you use skintone and/or eye color default replacements in your game?
2. Do you have Pets? (I assume you do)
3. Stupid question here: are you sure that the clothing/makeup/etc. the Sim is using is actually Custom Content and not Maxis made (perhaps from an EP or stuff pack you don't normally use)?
As far as I know, BodyShop doesn't have its own patch.
1.) I've used ChristianLovs skintone selector initially, then when I rebuilt the hood, I packaged each of the sims and built a new sim in a new hood. It knows what skintone, etc to use, it just doesn't include them.
2.) Yes, and I used the patch, same with Seasons (patch 3)
3.) I know skintone and makeup is custom content.
If I remove my downloads folder and install the sims2pack, it doesn't install the CC, rather it uses the defaults. Could this remotely be related to a hack? Although I doubt hacks would cause any problems with Bodyshop.