Sims 3 Store Errors, cant download content

@307955  If you go to the product pages for the store items, do those pages show you own the content?

https://store.thesims3.com/setsProductDetails.html?productId=OFB-SIM3:70461

https://store.thesims3.com/setsProductDetails.html?productId=OFB-SIM3:72332

https://store.thesims3.com/setsProductDetails.html?productId=OFB-SIM3:72837

One thing that these three sets have in common, as far as I can tell at least, is that they're all newer than patch 1.54.  So the first thing to do is to manually patch to 1.67, which you can do with the Super Patch.  You can find a download link here, under "Cumulative Base Game 1.67 Super Patcher":

https://forums.thesims.com/en_US/discussion/175477/official-ea-download-link-for-the-sims-3-cumulative-manual-update

Once you've updated, try again to download these sets, and if you get the same error in multiple browsers, let me know what those product pages say.

@307955   The update option is no longer available in the game launcher. You need to find the 1.67 super patch. Once the game is patched to 1.67 the game will patch to 1.69. This removes and/or disables SecuROM and SafeDisc DRM. An easier way is uninstall the game and get the download version. Pc users are now required to use the EA app. Installing the EA app will uninstall Origin - you do not need Origin as it no longer properly supports pc users. The EA app does not run under IOS so mac users still need Origin for DRM. When you log into the EA app you can install Sims 3 and that will install the 1.69 version. Installing the game also install expansion packs. Start the game and go to the load game page. Click on the three dots in the lower left and you will find an option to open downloads dashboard. From there you can install items from thesims3.com store. If you get any errors just close the game and restart. .You will find other new options from thesims3.com. I was trouble shootings store items not staying installed and any workarounds quit working. I reinstalled the game completely and installed using only the EA app. My game has been stable and playable for 2 weeks now.

All three of the CCs are showing up as downloadable in the store, so I suspect that the launcher patch is the problem.
I've just downloaded the superpatch and gone to use it, and I get this bizarre error message from it; can anyone translate what its trying to say is running? 

@307955  Just restart your computer and try again.

And in case it's not clear, you absolutely do not need to install Sims 3 via the EA App.  An all-disc install is still perfectly viable, as would be an Origin install if you wanted one (but I don't see why you would if you can just play through discs).  Store content is also unreliable, at the moment, with an EA App install, but not with any other kind.