# RC Input: Critical

One of the following conditions may be present:

- One or more of the r/c input channel types is not set.

  On the GCS configuration page, make sure all inputs have a Type set.

- One or more of the r/c input channel mappings are invalid.
- The driver is uninitialized for one or more of the r/c input channels.
- Current flight mode is undefined: this indicates a bug in the code.
- Current flight mode set to guidance but flight status flight mode is reported as something other than altitude hold.
- During update of desired stabilization mode, flight status is reported as something other than stabilized 1, 2, 3, 4, 5 or 6.