I've been using a stamped layer for a long time to create a new layer from the visible ones below for use with plug-ins I want to operate on the combined effects of the preceding layers. Sometime within the last couple weeks, I've encountered problems when doing the combination of keys on the topmost of the layers I want stamped. The initial problem was that the effect of a layer in Dissolve blend mode wasn't visible in the new layer. Yesterday, I encountered a new problem -- I get an error message from Topaz plug-ins when I try to use them on the stamped layer. I've discovered in troubleshooting that using the usual combination of keys on a new blank layer above the ones I actually want stamped gives me a new layer that I can use with the Topaz plug-ins. It appears that something done in connection with a new version of Photoshop CC has inadvertently caused a problem.