Hans-
The dll is referenced in our project and we don't have any errors. When we publish it, three items are created: a folder called "Application Files," setup.exe, and "Virtual FTP Client.application." In the Application Files folder, there is a deploy file called edtFTPnetPRO.dll.deploy. That leads me to believe that it has been successfully added to the installation package. We are willing to send you the installer, assuming that these three things constitute the installer. If I am misunderstanding what you mean by installer, let me know.
Thanks,