Has anyone encountered this issue yet? I have a user event script that builds a button on the customer form. When pressed, the button was calling a function in a client script, passing data. The client script passed the data to a suitelet, which builds a unique form to accept user input. This worked correctly about a month ago but now when the button is pressed, nothing seems to happen. I can't even get log messages to generate from the client script, so I believe the user event script is not calling the client script any longer. I am setting up the call with the following code: