I managed to create a capital ship after so many mistakes. Perhaps my path will help someone. 1. My previous capital ship died from incorrect LOD objects after a server crash. Compensation was received. The ship itself is located next to the station and constantly causes error messages. (I hope it will be removed someday). But there were still modules there. (especially expensive engines). After that, nothing could be created in the dock where this ship was created. Rebuilding the dock, restarting the game in the dock, etc. did not help. Removing the capital ship from the list of possessions also did not bring results.
Finally yesterday everything worked out for me.
The first assumption was that somehow the dock and the capital ship were connected. Perhaps this is not so and their connection is only due to a server failure. The second assumption was the fact that the dock occupies the entire expansion zone of the station. And perhaps the connection is not with the dock itself, but with the zone and what is located in it. I decided not only to redo the dock, but also to change the area where it is located. It worked for me.
I spammed the floor with cheap blocks and got another additional station expansion area and captured it. I then built a new capital ship dock in a new area using old parts. The very first launch of the construction mode allowed me to create a new capital ship. Thus, the bug apparently was in the dock location area. Therefore, returning players who want to create a capital ship at their old base (who can’t do this), try rebuilding the dock in the new zone. For a completely pure experiment in the newly acquired zone.
The second problem is how to transfer expensive parts from an old buggy capital ship to at least the base. (It’s good that they are 500 meters from each other).
I couldn’t install new modules on the ship because previously I dismantled and disassembled everything I could. There was not a single block there (only a buggy LOD).
Since we do not yet have containers that moved anything other than ore, the task remained non-trivial. I even thought about just leaving everything as is. But there was too much money in these modules. And I was very sorry for the time spent on farming. In the end, I simply flew into the field of the capital ship, pulled out the element in my hands and, with the interface open, flew to the station to its field and there I dropped it into the station’s inventory. The distance between the fields was about 200 meters. If I had an assistant, I would do everything quickly. He would just ride me on a space shuttle between the fields. I had to make about 50 flights (about 2 hours of real time). But it would take me much longer to restore this amount of resources without a capital ship, so it was worth it. However, the task is completed and I can finally visit my outlying stations.
Perhaps someone will find this information useful.