Invisible SIms are usually due to corrupted outfits.
Since you can still navigate the Sim, try changing the cloth on the dresser to see if that makes him visible again.
There are other reasons but since Supernatural that's the most comon one. More info here: http://sims3.crinrict.com/en/2011/04/bug-invisible-sims.html
Both can corrupt. The career one just seemst o be more problematic (it has some major bugs).
Glad it helped you and thanks for accepting a solution.
I am having the same issue right now but with an infant, its invisible, other sims can interact with it but I can't see it. I can't force age it because its invisible, I can't edit it in CAS because I can't select it.....is there anything else I can do? The cake option does not age the baby either, the sim holding the baby goes through all the motions but then just picks the baby back up and puts in the crib.
@sammysammsamms Delete the five cache files in your Sims 3 game folder in Documents, and then try to age up the infant again. Those files should be deleted regularly anyway, and every time you quit while troubleshooting. For reference, they are:
If that doesn't help, go to Edit Town and evict the family and move them back in. The sims will keep their jobs and relationships but lose their promised wishes and opportunities. If you don't want this to happen, you could split the baby and one adult off and then place them back into the house; the other sims' wishes would not be affected.
Also, do you use custom content at all? Even if you don't have any items specifically for infants, bad cc can mess up their appearance too.
Next time I will try that......I'd been dealing with it for 5 days so i just used the master controller to annihilate the baby.
I did try the move them out and back in suggestion and that didnt help......but a funny thing when I used the master controller and tried to edit the baby by searching through all the sims he wasnt even an options so I think it was just complete broken.
