Hi Walter,
I think col1 is the lanes, what I am doing is sample I have 2 buttons on the menu, button A goes to the one with the Swimlane, at first it will load but if I go back and then push the button B which goes to another window, then go back again to press button A, It will have this error.
Im confused also on why does it happen, and one thing when I am in button A window then go back to the menu, then go again to button A it will load.
Thank You. Hope you can help me again with this problem :(