Thanks for this last post, css_maya. I have just gotten to video Chapter 10 - Auto Updater / Stub Photon and run into this problem. The downloads for the Photon-Unity3d-Sdk are at version 4.1.0.4 and have been packaged different since version 4.0.0.10. I was able to download version 3.4.31.10808 of the photon onpremise server and it does contain the necessary files in the lib directory.

Hopefully, someone can make a 'Patch' video that can be inserted at the beginning of the Chapter to illustrate changes that will need to be made. Re-recording the entire chapter would just be too costly. But a quick video explaining the differences and maybe a helper PDF (with video/timestamp markers and update instructions) could be included to help iron out issues as this arise. Version changes will be a constant as these great videos continue to age.

Strength to the Buzz!