Hey. We just released an update that we hoped would fix this for most users. It looks like it didn't work for everyone.
This means that your computer was unable to decode the video. If you could let us know what GPU and operating system you're running it would be helpful.
Even better would be to send the output_log.txt file from the SLR_Data subfolder to support@sexlikereal.com
The default install location of the app is C:\Users\YourUserName\AppData\Local\SLR VR Application\
We'll try to get this fixed for you!