I actually fixed it by deleting the items from the SIms 3 Launcher and then redownloading them from my purchase history on TheSims3.com. Not sure why this worked, but it did!
Did you install everything from scratch as described here: http://answers.ea.com/t5/The-Sims-3-Store/FAQ-The-Sims-3-Store/td-p/333394/ ?
I followed the instructions to the letter.
The problem is not resolved.
I also followed these instructions posted on another user's question:
To fix downloading and uploading issues with your launcher follow these instructions carefully.
Make sure that your game and launcher are not running.
Next
Delete the Cache and Clean Up Your Game This will eliminate remnants of uninstalled items that can cause problems from corrupt or outdated data.
It's okay to delete all of the following files from your game:
Go to your game folder and delete
CasPartCache.package
compositorCache.package
scriptCache.package
SimCompositorCache.package
Go to your Thumbnails folder
delete everything inside that folder
Go to your Content Patch Folder, then click on Downloads
delete any file that has " .part" in it. Any file with that extension is an old partial update.
Windows users only may also delete items in the World Cache folder. If you don't see this folder, you just don't have any other worlds installed.
Nothing is working. I am really annoyed.
