If this is impacting your on-air production, please open a support ticket.
I assume this is an output engine XPression? Like Studio?
Can you send a pic of hardware setup input/output tab?
The most common cause of the hardware setup page freezing is having unconfigured SDI inputs. So any one or a combo of the following changes could resolve:
- Just delete the inputs if you aren't using them
- Change the format of the input from <auto detect> to the correct format
- Set the input to Active
