vkCmdImageCopy - not working after driver update

Updated to the latest drivers and using vkCmdImageCopy doesn’t seem to work for me anymore. Validation layer does not flag any issues with how I’m using Vulkan. Using nsight to do a frame grab and checking the resources - it appears the source image is correct but only a black image is in the destination image after a copy. HW is a GTX 1060 w/ 466.27. Not sure what the previous driver version was where the code worked as intended. Any ideas appreciated!