Cause: Your project is compiled for AnyCPU, but the Chilkat DLL is 32-bit, and you are running on a 64-bit OS without proper configuration.
Solution:
Many developers mistakenly believe the DLL is free because they can add the reference. It is not. The DLL contains the fully functional code, but it gates execution via the license check. chilkatdotnet45.dll
In C#:
using Chilkat;
In VB.NET:
Imports Chilkat
Unlike a typical MSI installer, Chilkat is often deployed as a "reference-only" library. Here is the step-by-step process. Cause: Your project is compiled for AnyCPU ,