Pushtowin gave me the go ahead to upload a new TTW compatibility patch for his JSUE mod. I am doing so on here because I am in no great hurry to maintain another page on the Nexus...
TTW already integrates the GRA weapons/mods with the rest of the game. So that's likely why it isn't compatible.
If the issue isn't with TTW, then chances are maybe the compatibility patch in this thread broke something. Since JSUE was designed for FONV, not TTW, it probably doesn't reference anything from Broken Steel. I'm just grasping at straws here.