Been using PS since 1990, now CS5 on my iMac w Mohave. Started getting this message a month ago: "Could not save as “File.psd” because the file is already in use or was left open by another application." No network, no other programs open, e-thing just as it has been, for 30 years. I have found no answer yet, but I have my suspicions, which may be to try & force me into a stupid subscription? As a workaround I do what I need then just copy to Illustrator, I got no time for this BS
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