error in grc but c++ code running on terminal

Hi,

I am using USRP 2955. I am using the code in c++ given in github to acquire data. I don't know data is correct or not but the green light below one antenna is glowing. However, when I run a grc flowgraph I get fpga image incompatibility error. Why this different behaviour while running from terminal and while running using grc?

Regards,

Koyel 

Get Outlook for iOS