Program Stuck On "Authenticating"

I downloaded the program and when I try to open it a window pops up that says "authenticating" that is just a blank box that never loads. Is there any way to fix this so I can actually try to use the program?

You can access the discord server here, which is more active and is more likely to get you an answer: https://community.stencyl.com/index.php/topic,48592.0.html

That is an unusual error. Stencyl 4.1.2 will prompt you to download the necessary components when you first open it, you can just follow the instructions on it the first time. Is that not happening for you?