Maybe, i'll create another chapter to check.
edit : again, same problem with a new chapter i created.
In case i do something you don't , here's exactly what i do
- game start
- click on Fleet Overview
- select 1st company as it always had a bunch of promotable terminators
- select all the terminators and click on Promote
- Promote screen : select HQ , then Honor Guards (no other choice) , depending on what you have setup in the chapter creation you may or not need to go manufacture special weaponry, now assuming you have the honor guard weaponry ready (should be if you setup for them bolter and chainsword), everyone is now Honor guard in the Chapter Master's HQ
- Go to Fleet Overview, select the Chapter Master HQ (and so its 26 honor guards) , load them in the 1st cruiser.
- Map view, select the fleet, only check the cruiser that carry the HQ squadron and sent it to any ork world
- Select world, click Raid , select the ship ... and no Launch button will appear.
edit 2 : i think i see the problem : you need a specific minimum amount of troops inside of a ship for the launch button appear, you can't just load the 27 guys , the game for some reason will not allow the launch button to appear.
I added several troops of various companies to my 27 HQ guys and finally the launch button appears.
So no 30 guys squad attacks unfortunately, need more guys onboard