The following steps register the client library:

Download and Install the .NET Runtime

1. Go to http://www.microsoft.com/downloads/.
2. Search for "Microsoft .NET Framework 4.5.2 Developer Pack" and click the link for the download.
3. Click Download.

Unregister the Old Version

If this is the first time you have installed the client library, skip the following steps.

1. Open a command prompt and navigate to the old client library directory.
2. Unregister the old assembly using the following command:

> regasm /unregister Hps.Exchange.PosGateway.Client.dll /tlb

The assembly registration tool is invoked by the regasm command. The tool is provided with the Microsoft .NET runtime. If this directory is not in your path, you need to fully qualify the command.

Register the Client Library

1. Open a command prompt and navigate to the client library directory.
2. Register the assembly using the following command:

> regasm /codebase Hps.Exchange.PosGateway.Client.dll /tlb