I have a couple of old version of games that don't open properly on quest 5.4.1. No tabs showed or hyperlinks behave like this "object: thing". Is there a fix for this?

This is an aslx file right? You just need to re-save it so it gets the latest ASL version header, as you're running it against the 5.4 core libraries.

After saving with the last Quest the code changes to the last version but the right screen is still not showing (no tabs), so we can't edit the game...

I've seen that if I try to open the published form of a game. Not sure if that's relevant, but it's all I've got.