Hello Akash, I found the conflict when reviewing my Lightroom preferences. In the Lightroom Synch preferences tab, I had chosen a folder subordinate to my main Photos folder (named iPhone, as I have Lightroom Mobile installed on my Apple iPhone). The default location (My Pictures) would not have presented a problem. But I had to specify a path to my custom location, which included the drive letter G: I changed it to drive letter "I", and I now no longer get the error message on startup of Lightroom. Looking back, I might have been able to determine this from the text of the error message if it had included the full path "G:\Photos|iPhone" instead of just the drive letter G: So I did not have to reset my Preferences file.
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