Searcher wrote:
Tsliva has given the answer I would have suggested. though I would also suggest that in LR > Edit > Preferences > External Editing tab, the first block should be "Edit in Photoshop CC . . ." ensure colour space is Adobe Prophoto RGB.
LR Develop Module operates in ProPhoto, so the Edit in should also be ProPhoto as should Photoshop.
This reduces all the converting of Colour spaces to one, that is at Export, for printing and web, sRGB is the one to choose.
Is not the error message generated by PS CC that sees the proRGB set by LR? If so, how is PS CC at fault? For detecting the mismatch?
I am puzzled here. sRGB is the most prevalent followed by RGB...