Lags & Invisible, Frozen & Stuck Sims --> Post here if you have the issue.

The houses are stores with the save game. So that's a no issue.

Yes, you will need to zip it. Get winrar. It's free for a certain amount of time/uses (not sure which one) and after that, you'll just get a nag screen.

Zip up the whole save game folder (from that one game) and upload it to mediafire (for example). Then post the link here. I'll tell you when I have downloaded you can then remove the link.

If you have a savegame BEFORE they turned invisible, that would be great to have as well.