Mine has all 24.0 and everything seems to work fine.
I have not used NX6 or i-deas NX6 that much but i have not seen any issues yet.
The only issue i have seen is the with simulation. No results ever get generated. I was assuming i was doing something wrong and since i was only playing around i did not give it much thought.
But i can model, assembly, draft, use the content migration manager. etc.
Anyone think the FEA issues is related?