Can't mount network drive on MSO64

After updating to firmware 38.1.2189, I can not mount a network drive. The FILE UTILITIES window is hung up with a blue status bar moving at the top. When I try to mount the drive, it just sits there and does nothing. I am using the same inputs as before the FW update, but it no longer works.

We use SMBv2 for our network connections, so you might need to make sure it is enabled on the shared drive. That might be the issue.