If I export a table and then import it, I can make changes and save them.
I’m also getting this error message on some tables: “The entered value in the “Fixed Columns on the left” field is invalid.”
I’ll get in touch with you via the link you gave. Luckily it’s on a duplication of my currently live site so nothing is immediately effected.
Just checked on my live site that is still running the free version, but is updated to 2.0. All is fine there. My problem is with existing tables running the Max version.