The Mediabook is using Flash player which has been disabled by Adobe on 1/13/2021.
This is why you cannot create Mediabooks or play existing ones anymore.
There is a workaround :
- Download Flashplayer_32_sa.exe
- Rename your .dpa file extension to .zip
- Unzip the content -> it will create a folder containing all assets (including the .swf files)
- Double click on Flashplayer_32_sa.exe to launch it.
- Click on File > Open > browse to the location where you unzipped your Mediabook and look for the Performance Analysis.swf file
- The Mediabook will load.