Marcus Fetch Window mode won't work with Chrome. Monitor does work. I just tested.
Wirecast 8.2, Windows 10, Chrome 63.
Using Wirecast Screen Capture (you would not use Desktop Presenter on the same computer as Wirecast. It's now called Remote Desktop Presenter to be used on other computers over LAN).
Marcus Fetch Wirecast 6 series is no longer supported so it's entirely possible it can break.
This is why it's important to provide appropriate details when you post. Please read READ BEFORE POSTING at the top of this product forum. Without details there's to be a lot of time lost in back and forth communication.
You don't mention what version of Desktop Presenter you're using.
Please download 2.0.8 on the right side of the linked page.
Reboot the computer.
If that doesn't work then go back to the same page and under Previous Versions download 2.0.6.
Uninstall 2.0.8 and then Install 2.0.6.
I have the same problem,
but with version 9.01 pro, with remote ...dont matter what sofware I use to log into remote, shows the same issues.