I have created a Capital Vessel which was doing great until today. Suddenly it sprouted holes in it. The game knows the blocks exist there, but they leave a gaping view into the guts of the ship. The blocks "disappeared" spontaneously while I was working on the ship, it was not when I spawned it. EDIT: My friend helped me and we figured this out. The problem is the kinked pipe and the L pipe adjacent to each other. So, now I have solved it at least well enough that I can stop it from destroying my builds anymore. The following is a commentary on my attempts to fix it and may not be interesting or useful. I have attached 2 files, one is a bugged version and one is 2 hours older and is healthy. The holes are located on the bottom of the ship and if you fly up into the hole, in the ceiling above that, in the same spot. One of the lowest section windows also has a missing section. I did save it, but I have an older blueprint with around 2 hours less work on it. That one has no glitched blocks that I have found. The saved one with the glitched blocks, I saved for the purpose of making this report (and in hopes of salvaging the build). A save game is not necessary because it appears consistently in any world, etc. I have tried everything I could to fix it. I used the N building panel, and unfortunately, the build is completely ruined because even though technically those blocks are "there," they can't be removed or anything. Can't be filled in, can't be deleted, can't be replaced in any way using that tool or any other. The only thing I have found which fixes this (sometimes) is to make a new "CV starter" block and copy and paste the entire build onto it. While that usually works, it doesn't always, and so far it has not for this build (unlike my base build).