Last week I was working on an airport project for MSFS 2024 and all of a sudden had problems adding an object from the Object Editor. I would select an object, click “Add” but nothing happens. Nothing shows up in the Properties window either. I’ve tried uninstalling and reinstalling the SDK, and even tried uninstalling and reinstalling MSFS 2024. I am not on the 5.1 Sim Beta Update, just the 5.0 Update. Is this maybe a problem that just popped up, or is it just me? This is my first post, so I hope I’m posting in the right place. Any help would be appreciated.
Hi @hawkeye7581 and welcome to the forums! 
There is actually a separate forum just for developer support:
MSFS DevSupport - SDK Q&A platform for 3rd party developers
You may get a reply to your question here on this forum, but I suggest searching for an answer over on the dev site (e.g. with this query), and if you can’t find one, asking your question over there in:
Latest [MSFS 2024] Questions & Community Discussions topics - MSFS DevSupport
This forum focuses mostly on gameplay issues and discussions - most of the developers who could probably help you hang out on the MSFS DevSupport site that I reference above.
Hope this helps - good luck!
OK Thank you!