[chimerax-users] Permission denied to "Spin Movie"

Hi, I just installed ChimeraX on macOS Catalina 10.15.7. During installation, it asked me to allow access to desktop files and I said NO. But now, when I try to create a SpinMovie file, I get the message: Permission denied reading directory "/Users/pam/Desktop" while trying to determine next unused file name movie#.mp4. I guess I should have said YES to the question above. How can I fix this? Thanks, Pam