Array index out of bounds

[Slasher]

Hi,

a question about an Array error:

Error: Array index out of bounds (index :-1, bounds: 0...799) // last number varies at various times.

I do have: #define MAX_MISSIONS 200 

Int's I am using:

mirror_mission, madonna_mission, lubricant_mission, food_mission, word_mission, wheel_mission,battery_mission, glue_mission, elements_mission, switch_mission, questions_mission, lock_mission, wooddoor_mission,  combust_mission, direction_mission, cup_mission,balloons_mission,candle_mission,word2_mission,vase_mission;

could someone shed some light on this error and assist me please?

cheers

[Joe]

Error: Array index out of bounds (index :-1, bounds: 0...799) // last number varies at various times.

You are accessing an array with index -1. Index cannot be negative numbers.