So one of my Sims can't use the computer. At first when she tried to, she disappeared, and her portrait box was green with no picture of her. I tried switching to another sim, and then when I went back to this household, I everything seemed fine, but when I tried to use the computer again, she suddenly was not in the chair, but outside the house, and again, her portrait box was green, no picture (though I could still see her).
I did the reset Sim, which did not get her back, so then I again went to another household, came back and she was ok. By this time, I'd noted it had to do with using the computer, so I got rid of it, and bought a new one. As soon as I tried to have her write, she was out of the chair and outside the house again (but this time no blank portrait box).
She can't write on the library computer either.
But Sims in other households have no problem using computers. It's only this one Sim in one household.
What should I try next? I'm pretty new to the game, but I have read some threads around the forum (which is how I figured out how to do what I've tried so far). I am running several mods, including story progression and master controller.