Keep getting a missing sound file error.
"Audio clip sample"ballistic_missile/sound/servo_lift_short.ogg" not loaded

That’s strange. To be honest I don’t really know what causes this error.
I’ve only found a forum thread from someone who solved a similar problem by reinstalling the game.

Could you upload a log file that contains the error?
I’ll keep searching in the meantime if I find a solution.

Thanks, it glitches when you build the missile and the doors open. Installing the mod, researching the silo and building the silo all works fine.

That's the point when the missing sound should play.
If you could provide your log-file I can take a closer look.

Where/how do I upload the log file to you ?

Load a map and try to start a missile. When the error occurs it will be saved to the log file.
You can then find the log file in your user-data directory. The correct file is "factorio-current.log".
(More information here: https://wiki.factorio.com/Log_file)

Uploading it is easiest by using pastebin:
https://pastebin.com
Just post the link to your uploaded log here and I'll see what I can do.