We have recently purchased FileUltimate (v7.8.1.0) and installed it in our web application (.NET Framework 4.8, using AspNet Boilerplate). It has worked while running locally, deployed in a test web app in Azure, and deployed in one of two production Azure web apps. In the other of the two, however, I cannot even load the application, getting this error instead of our login page:

"Could not load file or assembly 'GleamTech.AssemblyResolver, Version=4.1.0.0, Culture=neutral, PublicKeyToken=a05198837413a6d8' or one of its dependencies. The system cannot find the file specified."

Since the same deployed code works in one app but not another, I am guessing it is a configuration issue somewhere, but I have not been able to identify or fix it.

What sort of settings could possibly explain this error appearing in one web app but not the other with the same code? I appreciate any insight anyone can provide.