Problem with Send Email using Smtp

Hi,

     I am getting an error 'Object could not be created' sending email by smtp.

     I created an assembly using Visual Studio 2015 and used on PowerBuider 12.6 Classic to send email.

     On Visual Studio I selected the properties as show on attachment 1 and 2.

     Then I use regasm to register the 'dll'. I tried 'RegAsm.exe "path of dll" /regfile:SendEmail.reg'

     In my machine it worked fine, 32 and 64 bits.

     The problem is that I execute the same process that I made in my PC on a client and I'm getting an error 'Object could not be created'.

     Is There something missing that I didn't execute? I can't find the solution of this problem.

     Regards, Vinicius