Trouble with multiple vehicle sim

When I launch a multi vehicle sim I have troubles arming the drone. I get Critical: Preflight Fail: Compass 1 Accel 0 Accel 1 Accel 2 Gyro 0 Gyro 1 Gyro 2 and system power unavailable errors. I have tried make clean multiple time and also gove into ~/.ros/eeprom and deleted the parameter files and re-generated. This solves my issues with a single uav but with 2 it doesn’t do anything.