If you are putting straight into your mission folder the do not have scripts, should be: [] execVM "zlt_fastrope.sqf"; You would use scripts if the file was placed inside a folder call scripts in the main mission folder. I believe you should be giving original authors full credit for their work, this was posted in another thread with the original author listed in the script, you have removed that and said author unknown, show respect for guys who put time and effort into these scripts and share them with us all. Original authors forum thread on the BIS forums" https://forums.bistudio.com/topic/160875-helicopter-fastrope-script/