Yes, this is correct. Due to binary incompatibilities in the new 10.4.2 release, TwineCompile 5.2.2 does not work with it. You need to download the latest 5.2.3 release via the GetIt package manager in the IDE.
When will version 5.2.3 be available via GetIt-Manager?
I have a professional subscription.
Version 5.2.2 is shown to me under Sydney 10.4.1.
Under Sydney 10.4.2 I don't see any TwineCompile at all.
Can TwineCompile 5.2.3 also be downloaded from your website and when will it be possible?