With the release of Cablecast 6.4 an update to the Blackmagic Desktop Video drivers is required.
LINK TO DRIVERS:
After downloading the installer linked above please run the MSI package with administrative rights.
Click "Next" to start the installation wizard and follow the on screen instructions to complete the installation.
At the end of the driver installation you will be prompted to update the firmware on the encoder card.
Click "Update Now" to start the firmware upgrade.
Please wait until the firmware update has completed then reboot your machine to complete the installation.