[SOLVED] VB.NET Windows Service cannot start System.IO.FileNotFoundException

I was creating a Windows service that includes a dll file. Whenever I tried to include the dll, I get following error.

Application: MyService.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.IO.FileLoadException
Stack:
   at MyService.MyService..ctor()
   at MyService.MyService.Main()