Sims 3 wont open with origin at all anyomore

@BillFlowerpot  You'll need to redownload and reinstall your store content; this is a known issue.  I'd suggest deleting everything in DCBackup and the .ebc and .ebc.tmp files in DCCache first, as they're now all just taking up space without being useful.  Since you're starting with a clean folder, this isn't necessary, but the point stands: the old .ebc files and the contents of DCBackup are now extraneous.

In case you're curious, the .ebc files are bundled store content, and the .tmp files are supposed to be deleted when the launcher finishes installing.  The files that end in .dbc correspond to custom content installed through the launcher.  The ccmerged.package file in DCBackup is necessary to make your premium store content work, but since you're reinstalling all your store stuff, you can delete it and let the game create a new one.  The other files in DCBackup are duplicates of the items you've installed through the launcher, and they have no purpose unless you upload creations to the Exchange and you use custom content in those creations and you want that cc to stick to your uploads.