Mirage Campaign mission 08 - ELINT, alignment issue

[Barka]

Hello guys, 

 

I have this problem where I do the alignment of the INS but at the end the INS shows "n.deg". Don't know what's going on. I've tried to align the plane before, after and during engine ignition, still get n.deg. 

 

Also, the coordinates I get on the F2 info and on the kneepad are different. Could it be the cause of it ?

 

Thanks !