Evil.Bonsai

question as to clearing 'cicu input error'. I was following the dms training mission. I was supposed to enter '3' on the ufc then enter that into the ripple fire settings for rockets. I hit the osb first (was zoomed in, didn't see the flashing icon on the ufc). There was the 'cicu input error' flashing on the hud. Try as I might, I couldn't make it go away and I couldn't enter '3'. What would be the correct way of dealing with this?