Loading Failed Part 4294554710 is missing

[differenczial]

I built a large vessel (375 parts), saved it and then wanted to try a launch. But loading the launch pad never completed, instead I got the error message: "Loading Failed; Part 4294554710 is missing" and got back to the space center.

Now I entered the VAB and tried to load my vessel. Again, it didn't load and I got the same error message.

Then I restarted the game, tried again. Still the same error message (when trying to load the vessel).

Then I verified the install in steam. Steam found 77 files failed to validate and have been reaquired. I started the game again and got the same error message.

Then I verified the install again. Steam found 1 file failed to validate and has been reaquired. I started the game again and got the same error message.

Then I uninstalled the game and installed it again. I tried again and got the same error message again.

I have no mods installed nor did I ever have any. I'm running latest update on win10 on steam.

The vessel (.craft file) can be found here: https://www.dropbox.com/s/ns6c0y2xyjv72a6/Fuel Station X1b.craft?dl=0

My System is generally well above requirements (AMD Ryzen 7 3700X  on MSI X570 Gaming Plus; 32 GB RAM at 3200 MHz; ATI Radeon RX 5500 XT).

Any help would be appreciated.

Edited July 17, 2021 by differenczial
Added dropbox link to .craft file

[OHara]

Looks like no-one recognised the problem, so good idea to put the craft file where we can see it.

There is a line in the craft file saying that one of the MK2 fuselages should be attached to a decoupler
    link = radialDecoupler1-2_4294554710
but there is no decoupler with that ID number.   Somehow the craft file has become internally inconsistent.

If I delete that one line, using a text editor, then the craft loads and seems to be working as intended.