I posted this issue on the Photoshop forums (as well as this feedback forum and received the following helpful suggestion from another user which appears to work. Setting the GPU performance to advanced but at the same time unchecking OpenCL has enabled that user, and me, to use the Select and Mask Tool without crashing. It also does not disable the other tools such as Liquify Face. There still appears to be an issue for Adobe/AMD to sort as the Open CL version is 2.0.6.0 (against the required v1.1) and the video card (AMD7900) is on the list of Adobe "tested" cards. In the meantime, on my system at least, it is a workaround that appears to work. Hope this helps others with the issue, and Adobe/AMD to narrow down the problem. Dave
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