I would like to send one or more sms messages through PC SDK 2.1 by using C#. But unfortunately, it is not working properly. Sometimes, I can send message, but sometimes not. I am getting following message when I try to send an sms;

Stack trace at SMS3ASuiteLib.SMS_SuiteAdapterClass.Send(ShortMessage pSMS)
at SmcMessagingService.SmsMessaging.SendMessage()

Anyone has an idea about it? Additionally, I am calling those methods in a thread. I tested SDK in VB6 and I didn't face with any kind of problem.

Orkun Gedik