That basically means that something is doing a #include "serial_ports.h" (probably in the camera code), but the compiler can't find that file. If you see that file in your filesystem, the way to fix it is to add it to your include path (directory). There's a setting somewhere in the project settings (something like Project -> Build Options... -> Project).
Do a Windows find for serial_ports.h if you're not sure if you don't have the file or need the path.
If you don't have the file (I'm not sure if that comes with the camera code or not), try grabbing Kevin's serial port code (frc_serial_ports.zip)
http://kevin.org/frc/