To me, it looks like there is an error somewhere in my folder causing this wallet-loading error.....I would assume the private keys are still correct (otherwise it would load a normal wallet with 0 balance I assume?) but there is an error in there somewhere.

Is there a way to copy just the private keys into a working Jaxx folder (and not replacing the whole folder) perhaps?

Where can I find the exact private keys? The whole folder together is not the private keys, is it?

I'm asking this because in a healthy normal Jaxx wallet you have the option to view your private keys and they are just "addresses" (a combination of numbers and letters. So in the map on my computer, these must be located somewhere also, right?