So, i got some mods working in harmony while in single-player. But when i join my friend's server, i can't hit anything, and the only hostile entities i see are mini-bosses ( larger than normal native monsters) and enemies in dungeons. However, I can't do any damage to these enemies and they act like i'm invisible. Disabling the mods solves this. The mods i use are: -Homesick -ExtraLanterns -StasisBed -Porta-Porter -TStechnologies -Logic Gates -LIssar's Hair Mods -Empress New Clothes  I just thought about reenabling my mods, just to see if it'll happen again. Now it's working as normal, so i'm not very sure if it was the mods [edit2] Was playing a bit, and had to recreate some of my mod items. Just realized that when i equip items from Empress New Clothes and beam down to a world, the problem reappears. It's OK if i beam down first then equip the items.