Hi Nick, I'm not seeing this. Can you provide a screen shot of Photoshop with an image open and the options grayed out? Or one of the errors brought up by your actions?
This sounds like something you might need to reset Photoshop preferences in order to fix. But I'd like to see some screen shots first to be sure.
Reset Photoshop Preferences:
Hi Mike, I've attached a screenshot that shows the options greyed out. When I open Photoshop on it's own (without going through Lightroom), it functions normally. The current way I am able to work around this problem is to pre-open Photoshop, then open Lighroom and when I want to "Edit in" Photoshop from Lighroom, the image opens up into the the pre-opened Photoshop program. Sorry for any confusion.
You've tripped over a recently introduced bug -- see this bug report: Photoshop 20.0.1: Most functions in Edit, Image, Layer, Select and Filter grayed out for image opened from Lightroom Cla… Be sure to click Me Too and Follow in the upper-right corner, and you'll be notified when the bug's status changes.
Meanwhile, the workaround is to launch Photoshop manually before you start LR (or at least before you invoke Edit In).
Thank you John for bringing this to my attention. Hopefully this bug will be addressed soon. Thanks again.