Can't find file for asset.

[GabrielValle91]

I am relatively new to UE4 so the answer to this might be simple, but I have not been able to find a solution myself.
I am able to get the plugin loaded and can incorporate it in my EQS files and the AI executes tasks as expected, but every time I close and reopen UE4 I get the following error

I have to add the node containing the cover generator back to my EQS files and functionality is restored, so it is not a game breaking issue, but I was wondering if you knew a solution.