Hello rathride, and a warm welcome to the forums! 🙂
Hmmm, try this first...
Not certain, but this can fix myriad problems...
Safe Boot from the HD, (holding Shift key down at bootup), it will try to repair your Disk Directory while the spinning radian is happening, so let it go, run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, then reboot when done.
If that doesn't help try a new folder.