Controller error during executing a scenario of C VUser script imported from SeeTest using NV

I recorded a script using Experitest SeeTest Automation tool for mobile performance testing and then copied the code to C Vuser protocol in HP loadrunner. The script passed without any error and scenario execution was also successful.
But when I used NV in controller for scenario it stops and gives me following error.
1. C:\\Program Files (x86)\\HP\\LoadRunner\\include/ic_api.h(2218): Error: Could not connect to Network Virtualization - onConnect function failed resulting in error=Invalid client IP: ''.. Scenario will run without Network Virtualization.
2. C:\\Program Files (x86)\\HP\\LoadRunner\\include/ic_api.h(2218): Error: Could not connect to Network Virtualization - onConnect function failed resulting in error=Invalid client IP: ''.. Scenario will run without Network Virtualization.

Note: Controller executes fine without NV

Please help me out with the issue.