That can be fixed by making sure that the folder you select is writable - either by running a ‘chmod’ command using terminal or going to Finder, selecting GetInfo and then Sharing and Permnissions.
Once I did that, however, I started getting an error saying that this app could not write to that folder. That can be done through this application’s settings in the “Cache” section. The solution was to change this app to download Bing pictures to a folder other than the one Google Drive was using. The “Daily Wallpaper Bing Edition' application was set to download Bing’s pictures to the same folder, which I had not realized until I saw all these Bing pictures show up in my Google Photos. I use Google Drive’s Backup and Sync app to keep my Mac’s “Pictures' folder in sync with my Google Photos. One thing I discovered that might be helpful to others. This app now gets those pictures to my mac desktop! Worked as advertised out of the box, no issues. Love Bing’s daily pictures but don’t use Bing.
