You don't need to download anything. The error is probably caused by a conflict in your bin folder on production server:
Ensure there is no old DLL file named GleamTech.Core.dll anywhere in your project, it was replaced with new DLL file named GleamTech.Common.dll since FileUltimate v7.3.0 and DocumentUltimate v5.1.5 (November 20, 2019 updates).
In Visual Studio: Go to Tools -> NuGet Package Manager -> Package Manager Console and run these commands one by one in order:
Uninstall-Package FileUltimate -RemoveDependencies
Uninstall-Package FileUltimate.NuGetOrg -RemoveDependencies
Install-Package GleamTech.FileUltimate
If you are using direct DLL references instead of NuGet reference, first clean your project, remove references to old assembly GleamTech.Core.dll, add references to new assembly and rebuild your project. Ensure there is no GleamTech.Core.dll left in your project bin folders.
Also note that GleamTech DLLs come as a set, so you should use the GleamTech.Common.dll which corresponds to GleamTech.FileUltimate version. You can’t mix them from other versions.
For example GleamTech.FileUltimate 9.7.2 comes with this set:
By the way you say
I have an issue with FileUltimate v8.0.0
but after that you show
// Assembly GleamTech.FileUltimate, Version 9.6.0.0 |