Just wondering if there has been any resolution to this issue. Have the same issue as Robert Boire - where pretty well each time I start Lightroom 6 (perpetual license), it requires me to log in and enter my serial number again. After 3 chat sessions totaling about 6 hours with Adobe staff, after trying numerous things on my computer - they finally said I had to delete all adobe products from my computer and then reload them. It looks like there is a glitch in how they rolled out the licensing for this software.