We were recently trying to take the M300 up to perform an inspection on a hatch on a mill in our facility.  This was the first time trying to take off inside the facility.  The drone kept saying it was trying to initialize the battery and had an SD card error which were both just used on the last mission.  I tried to put another SD card in the H20T and got the same errors.  We had 2 green and 2 red flashing lights on the drone and were never able to get it to fly.  I have not tried to ust the drone since just thought I would throw this out there to see if anyone has had this issue.  Thank you in advance for any info.   

We were recently trying to take the M300 up to perform an inspection on a hatch on a mill in our facility.  This was the first time trying to take off inside the facility.  The drone kept saying it was trying to initialize the battery and had an SD card error which were both just used on the last mission.  I tried to put another SD card in the H20T and got the same errors.  We had 2 green and 2 red flashing lights on the drone and were never able to get it to fly.  I have not tried to ust the drone since just thought I would throw this out there to see if anyone has had this issue.  Thank you in advance for any info.