Error Message: Invalid Argument to Date Encode

Hi. I am running Advanced Renamer v3.84 on a Win10 Pro x64 PC. I have used the program to perform filename modifications successfully, but am now running into trouble trying to do timestamp modifications. When I click Add->Directory and select the directory with the 73 files whose timestamps I want to modify, I get the following error: Invalid Argument to Date Encode. I click OK, which leaves a status box on the screen that says Please Wait Analyzing Files, but the progress bar never moves and clicking OK on that box does nothing. But if I click the X on that box, it goes away, and the file list remains empty. I then select Add->Directory and select the same directory and get an error that says "73 of the items are already in the list". But the file list was blank. Anyone have any ideas what is going on here?

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Also, I have already uninstalled and reinstalled the program but the problem persists.

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