Steps to deploy the dtSearch Engine in a 64-bit .NET 4.0 application.
1. Install the correct version of vcredist_x64.exe.
2. Copy dtengine64.dll into a folder that is on the system PATH, or register the type library in dtengine64.dll using regsvr32.exe.
3. Copy the 64-bit dtSearchNetApi4.dll (from the dtSearch bin64 folder) into your application folder.
For additional optional files and components, please see: Installing the dtSearch Engine.