question about ticket for riding dirt bike on street?

I was riding a 50cc dirt bike with a friend in his court, about 1 1/2 years and a cop passed by, seen us, then turned around and we had to talk with him. After talking for awhile he issued my friend and i tickets for the same thing, riding dirtbikes on a street and other small things. The court date was 3 months later for both of us, same day and when I went there with him they said I wasn't in the system for any ticket, although my friend was. So the lady behind the desk helping me said that it wasn't in the system so don't worry about it. So I left it alone until just this morning when I had my new supervisor run a DMV check so I can drive the company vehicles and it came back as me having my licensed revoked for a ticket. So I went to DMV to ask about it and the person helping me printed out a paper saying why my license was taken 5 months ago and how much the fine was ($800) I will lose my job if I don't get this sorted within the next 3 days.

How exactly can I go to the court and prove I was there on that day and had full intentions of paying the ticket?