I Can't see the sim panel on sims 3 and my sims picture is invisible

• Does this happen to only that family or do you have the same issue if you start a new game ?
• Are you using custom content or mods ?

You might find some solutions going through this link: http://answers.ea.com/t5/The-Sims-3/FAQ-Game-Corruption/m-p/968290/

I had this problem before but I couldn't find a solution. You could try starting a new game and then going to edit town to see if your household was saved there.

Well, it happened once before when I had started a new game. My sim had a horse and then the icon for her a was the horse and it never switched. I deleted that family because I just started it.

Oh and I have a couple custom content but I generally do not get alot because I have had problems with it before. I actually do not know what a mod is though.

Does sound like the game corrupted. 

How long have you been playing that game ?

I made it a couple months ago but I just started replaying it two or three days ago, after I got another issue with sims 3 fixed.

Do you have a backup you could try ?

If you use save the game automatically makes one. It has the extension .backup. Removing .backup from the file name should active it (you need to rename the corrupt one first)

Hmmm, I will check.

I'm having the same problem. I just got the horse, and now I can't see my sims wants, I only see the horse head. I'm wondering if getting rid of the horse will get rid of the problem?

You can try. If the game is corrupted, you'll probably run into other issues though.

Did you read the threads linked in this thread ?