Just received an email back from NIK Software informing me that Silver Efex Pro v. 1 does not work with CS6, to which I just upgraded. I understand that I can achieve most of the SEP BW conversions in Lightroom, but I'm damned lazy, and really appreciate the speed of the thing. As the upgrade is approx. $80 USD through the end of May (with coupon), and as I can still call up SEP 1 from Lightroom 4, are there compelling reasons to upgrade? Just read a review at Northlight-Images, and he's 'bout got me convinced, but before I part with those hard earned bucks, I'd appreciate other views. (BTW, I'm strictly a hobbyist.) Thanks in advance.