To Continue: I have read that it is possible to have both Origin and the AEapp installed at the same time so I thought that I would re-install Origin. I clicked on a saved OriginThinSetup It started to install and told me that I needed the latest version, so I accepted to download same. Upon trying to install origin, OriginSetupI got (Shot 07). I was not able to install Origin. The message stated that I need to be online while Origin was installing, however, the shot shows that I was connected and that I had a good signal. This is most likely an internet problem and as edge is no longer being supported for windows 8.1, people like myself with older machines may not be able to re-install Origin at any time in the future..
I opened the Electronic Arts folder and re-named 'The Sims 3' I started the game by clicking the Sims 3 shortcut and got the new EA app. I Entered my data and selected 'The Sims 3' from my profile and was able to get the launcher. All of my expansion and stuff pack where there no problem. I installed some Custom Content and when into a new game. The CCs had installed successfully. I quit the game re-opened the launcher and installed the rest of my CCs.
I find that opening a folder with saved CCs in, highlighting them and pressing return works very well, After they have been installed DON'T close the installer, but select 'Installed Content' to keep an eye on the contents. I then (While the installer is still open), highlight some more CCs and press return. they won't list in the installer's window, however, you will see them being installed in the installed content window. I find that this is much quicker than closing the installer which takes quite some time and quite some time to open again for the next bunch. Don't try to install too many items at one I set myself a limit of 10 items. I also periodically delete the contents of the Download folder in the Sims 3 folder. This has worked for me on several occasions it may work for you. This way I was able to install over 250 items including worlds and venues in under 3 hours. Before I discovered this method it took me more than twice that amount of time.