Error: Failed to acquire license for RDP protocol

Hello Experts

Greetings!

I have created RDP script and it was running fine upto last week. Suddenly it has been failed in this week and I am getting the below error when I run the script from Vuen:

Action.c(4): Error:Failed to acquire license.
Action.c(4): There was an error while connecting to the RDP Server

I can able to login into the server without any trouble. I have developed the script using Vugen 12.0, Build 1362.

Please help me to resolve the issue.

Thanks

Selvaganesh E