It's running as administrator, and I tried something like that the other night where I deleted all the files and renamed the new ones. Took a long time since there are a lot.
Once I started things again, it redownloads the files again, because as far as Origin is concerned, it's still the old version installed.
Will try just deleting the files and see if it will rename them itself.
Another thing I noticed, is that the folders are set as Read Only, but files appear to be ok. I tried changing the folders turning off the Read Only, but once I click OK to complete it, and I check the properties again, it's checked as Read Only again.
Think this would be a cause.
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