First of all I want to tell you that I am a novice in this. When working with Epplus in .net I get this error:
UNEXPECTED ERROR System.IO.FileLoadException: Could not load file or assembly'EPPlus, Version22.214.171.124, Cultureneutral, PublicKeyTokenea159fdaa78159a1' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) File name:'EPPlus, Version126.96.36.199, Cultureneutral, PublicKeyTokenea159fdaa78159a1'