Visual effect problems in iOS

[Graham Samuel]

Folks, I have been trying to use 'visual effect' to make transitions between cards and between stacks on an iPad app and I am not getting anywhere.

Firstly I can't get the transition between stacks to do anything. The syntax shown in the dictionary seems a bit ambiguous (I just want to move to another stack in the same window) but I am not seeing any transitions. So I decided to confine my effects to a single stack, just switching between cards.

I built a tiny stack that just moves between cards using buttons that do this kind of thing:

on mouseUp
   visual effect "flip left"
   go cd "second"
end mouseUp

This works fine in the simulator: but when I put the same bit of code into my actual app, the 'go' works but not the visual effect. Here is the actual code, copied from the app

on mouseUp
   visual effect "flip left"
   go cd "Diagram"
end mouseUp 

The card exists and is in the current stack. What can I possibly have done to stop the effect working? Beats me.

FWIW, I'm using LC 5.0.2 on MacOS Lion 10.7.3 with version 4.2.1 of Xcode and version 5.0 of the simulator. The alwaysBuffer of the relevant stack is set to true.

Puzzled

Graham