For all PDM developers, there is a interesting behavior you need to be aware of. The eDrawings Professional preview in File Explorer is broken if you use AssemblyResolve to fix broken references in your add-ins.
This happens in 2024 and 2025.
I think SW is working to fix it.
Does it still fail if you try to load only the assembly that matches “args.Name”? Otherwise you should return null to allow other code to resolve it if possible.
– BigCrazyAl