I had this pesky issue when running tests with Spring.Core.dll DI dependencies. I have two different Spring.Core.dlls, both of them with file version 18.104.22.168. I tried the following options
- One of the Spring.Core.dll’s related Spring.Core.xml was 2064KB and other one was 2069KB. I thought this was the issue.. I tried replacing all (21) bin\debug folders with 2064KB- no luck!
- Replaced all bin\debug folders with 2069KB xml – no luck
- Opened up one of the Spring.Core.dll with .NET Reflector.. Found the publicKeyToken was 69something; Opened other one.. publicKeyToken=null.. So replaced all bin\debug folders with the valid Spring dll. It works!