importing .gpx to MFD

I am trying to load waypoints onto my ES128. There are approx 3000 of them. They are in 2 files. The MFD only takes about 90 of them then errors "card in use retrieving failed". How do I load them?

  MFD1.JPG (Size: 25.44 KB / Downloads: 0)

  MFD2.JPG (Size: 24.93 KB / Downloads: 0)

  MFD3.JPG (Size: 24.7 KB / Downloads: 0)