Unanswered question

I am using Neoload version 5.2.4. In my script have java script actions that are referring to some of the methods in the files that I have loaded into Javascript libraries. The script runs perfectly fine without any erros and give me expected output.
However, every time I close and re-open the Neoload, the java script action fails giving me the error that the method I am referring in JS libraries does not exist. For resolving this, I have to delete all the files I am referring to in libraries and then create new libraries again. I have tried this multiple times and everytime I close an open Neoload, I have to do this. Has anyone faced this issue? What is the solution for this?