Hi,
as I said before, I'm sorry you are having problems with the plugin.
I downloaded Printed_Circuit from the database and here it loads just fine (see attached screenshot).
I'm really not sure, what the problem is on your side. But I can say, the plugin is definitely not in beta state. Several users have downloaded the updated plugin and we have not received a single bug report. I'm not saying, this is definitely no bug. And if it is a bug, we will try to fix it as fast as possible. But I will definitely need your help in finding it.
Can you please provide me with your Printed_Circuit Substance, so I can have a look, if there are any differences?
Maybe your file got corrupted on download?
Does it open in Substance Designer or Substance Player?
Is there maybe anything special with the place the file is located? Does the path contain any special characters (no, I'm not aware of any limitations regarding this, just guessing)? Are there any special access permissions?
Are you sure, you correctly installed the updated version 1.2 (or 1.1 in that regard) of the plugin? Open the console in Cinema 4D (Menu Script -> Console...). Do you get the startup message from the plugin saying the following?
Initializing Substance Plugin (version 1.2)...
Substance Engine: xxx
Substance Plugin successfully initialized.
Please, help me to help you.