I have a Navnet Vx2 unit that i purchased used but the unit was never installed onto a boat. So it is virtually brand new. I purchased the west coast C Map Max from The GPS Store so this is brand new. When i power up my unit the C Map seems like it is not being read by the navnet vx2. Everything else like radar and fishfinder seems to work as well as the actual GPS position. The charts that are displayed are the basic charts based off of my current gps position with absolutely no details that the C Map card is supposed to supply. I tried a different C Map card from a friend and his card did not work either but works perfectly fine on his furuno unit. I tried to upload data and nothing. Looking for some suggestions on what to do now.