Usually the best place to report these things is the respective author's Github (or MCF page if none is easily accessible). It is good practice, IMO, to notify the author of each mod in the mix, as sometimes these things need to be a collaborative effort to work properly.
Just out of curiosity, what prompted you to build a Mining Laser in a Runic Dungeon? I must admit, I laughed when I read it, thinking that it sounded like something I would try. For now, I suppose the easiest workaround is to simply not do it (unless someone on a server is abusing it, in which case take it up with the player directly).