All right so I checked the console.log and found a few lines that could be the problem
"ProjectileData::onAdd: Invalid packet, bad datablockId(explosion): 1234
ShapeBaseImageData::preload: Invalid packet, bad datablockId(casing): 0x4c9
Sequence import failed: sequence node "Bone.004" not found in base shape.
Connection error: Loa."
Any ideas if this is the problem? And if so, what to do?