So, great news - It was the firearms mod that was the issue and I removed the 5.56 groups from it since your mod has them already. Harry's mod was fine since it only threw yellow errors but for now I'm keeping it out. I no longer throw any red errors with the issue in the Firearms loot xml. My only issue now is suddenly I cannot click on anything in regards to setting up my skills. First it starts off center, so I tab out, retab back into it and though I click on the perception (and every other option) it just stays on strength. It looks like I have all the conflicts out of the way, now the only issue is that.No worries. It sounds like Harry's mod and Wasteland just don't play well together. You could make them work, you would just have to remove the duplicate things. Like the group556Small loot group. His mod and mine both apparently have one. You could likely remove it from Wasteland and then my stuff would just use his loot groups. But as I said, there's probably more than that one duplicate, that's just the first one it found so it threw the error. If you fix it, there will likely be another one pop up.
https://pastebin.com/AePxJ3Hk