I've already posted this topic, but all I got was "A lot of problems come up with Mac users." and "Try reinstalling Blockland." (which I already tried). Then it sank to the 11th page.
I have had this problem since about v13 and it followed me around. I have no Manhole cover, no Bathroom doors, no Dial switches or Vertical Buttons and Valves, and no Rolling Vault Doors, among others. I'm afraid this means when I'm hosting, then people don't have these in Bricks. I have all the JVS Packs and Content Add-ons.
What do?