I managed to find the problem for you. If you go to the fuzzy controller (and all it's subvi's).
Select File>>VI properties >> Execution you will see that it is all set to subroutine. This means that sometimes (more often than not) the code won't actually run at all.
You need to set this to anything but subroutine. This will solve the updating all the values problem. As for the play buttons etc missing..
Hope this works (it did for Dedy)
I want to test my fuzzy controller and my rules and print out the I/O characteristic field.
I could not even find where can I see the I/O characteristic field as mentioned in refrence manual figure 3-17.
I was wondering if you can help me.