Audio but no video playback Dorico 3.5

Hi Guys,

I am having trouble getting video playback on an attached video in Dorico Pro 3.5.12

I am getting audio playback but no video, the window does not come up by selecting it in view or pressing F4

Here are the steps I have tried
-Used Media Encoder to convert video to a variety of supported wrappers and codecs (incl DNxHD and H.264) also have tried different supported frame rates
-Uninstalled Dorico, cleaned registry with CCleaner, reinstalled (made sure Dorico is running as admin)
-In every case have selected project frame rate to match source when attaching video

System information:
i7-6700 3.4GHz
NVIDIA GeForce GTX 970

I cannot even get Dorico Pro to show me the video screen, which worked fine in the same project in version 2.0.

Sometimes the Video window ends up opening off-screen. @Ulf posted a solution for this a while back, which you can find here.

That worked, thanks!

Ulf’s solution worked for me too. Many thanks!