I have solved the issue by only installing the two "Old" plugins and removed the Datasmith Twinmotion Content for Unreal Engine (Beta) created for TM23. I read through the release notes of all of them and I find it misleading that it states that only the plugin for TM23 should be installed to make it work while actually the opposite seems to be the case to make packaging work.
I understand its a beta, and maybe some stuff from TM23 is not coming through (need to test/see) but if I can not package with the TM23 plugin then it is no use. So that needs fixing quickly in my eyes.
Hope this may help others.
