I *think* I may have fixed it. I right-clicked on it in Explorer and chose Run as Admin. The next time I tried to d/l, I got the Access Denied again but I also got a warning pop-up from my antivirus (BitDefender) regarding frd.exe. I had forgotten that I'd had a problem with it starting up yesterday. So I whitelisted frd.exe, rebooted, then made sure BD was running correctly. I just d/l'by LuvFRD - FreeRapid Downloader - General
Yesterday I started getting "Access Denied" when trying to d/l from any source. However, the files d/l just fine in Firefox. Here's part of the log from today: Fri Jul 28 13:16:26 PDT 2017 WARNING: Couldn't create fir C:\Users\LuvFRD\AppData\Roaming\VitySoft\FRD Fri Jul 28 13:16:56 PDT 2017 SEVERE: cz.vity.freerapid.core.tasks.DownloadTask@15059cb failed: java.io.IOException: Access is deby LuvFRD - FreeRapid Downloader - General