One does wonder if you restored from TM backup why the Sony app doesn't work, but that's Sony for you.
However, first of all uninstall again, then, if you dig around in your Mac Library files you will see a whole lot of Sony related files in a variety of locations. I deleted them all and reinstalled (after rebooting). It did then work (although now for some reason, it has decided to stop seeing my reader when I plug it in. I suspect it's because I've loaded PRS+ and live in the UK so it doesn't like the US firmware).
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