@BreeMiles - I have had my share of launcher issues lately too. I went in and cleared out the internet browser history and cookies. Mine are set to clear at the end of each browsing session now, as they were before Netflix didn't like not having a history. I also had to go through my studio and delete some stuff out of there. I cleaned up with ccleaner too. I went so far as to create a new sims 3 folder and copy in my dccache and installed worlds folder as well as the content patch and mods folder and, of course, that dcbackup ccmerged file. So, I had a clean game that I could just copy the export file into and upload from there. I don't click the log in option in the launcher. I just check and click upload. Then I get that box to log in automatically. So far, crossing fingers and knocking on wood, I've been able to upload these last train cars without issue.
By the way, your restaurant car is awesome, of course.
I've uploaded the Royal Scotsman Observation Lounge now:
https://www.thesims3.com/assetDetail.html?assetId=9357528
All pics are in the upload.
I turned all the bike racks so the skinny side was in the actual doorway and I moved them as far away from the door as possible and still remain on the top step. This worked for getting sims in and out all the doors just fine. And, as I mentioned earlier, I have no problems with sims using the all-in-ones in the corners by the doors.
Today I'll start on the spa car. Have a great day. Enjoy your weekend. Take time to get outside and enjoy some fresh air and sunshine!