Dear Tyrus86,
GREAT!! Thank you so much!!
Commenting out the two lines you mentioned did the trick for me.
I had an error complaining about “cooked content” which I solved switching to “DebugGame Editor” instead of “Development Editor”.
Then there were issues with breaking points: pressed “continue” - and it DID IT 
Could open the file in UE 4.13.2 and the webcam is working!
Thank you very much Tyrus86, I hope I can return the favor someday :)))