A Handy Tutorial at Garden Of Shadows The More Sane Method!
Thanks to SSChan and linuslover30 for doing the testing to make sure this method works.
This eliminates all of the idiocy related to the Sims3Pack and the Launcher.
To export a sim, go into CAS and find the options dots as described above. This time, select "Save to Sim Bin". It will do it's saving thing. When it's finished, go to your My Documents\Electronic Arts\The Sims 3\Saved Sims folder, and pull out the .sims file. Zip or rar for upload. To install, simply unzip the file and extract it back to the Saved Sims folder. That's it. This method seems to work perfectly at the moment, though if/when more CC becomes available, and there is a decent extraction tool released, the Sims3Packs might be a more convenient option. Who knows at this point? For now, this method is less of a headache.
------- Seems like a fun way to share Sims!