[Kenn_Tran]

Is there a way to disable the pop-up window for when I run a program and it reaches an invalid instruction?

   

[Albert]

When a program can't be completed it will show a blocking popup. If you are using the API you can use the function Update to know in advance if there will be any issues with the program.

You can prevent all popups by using the command line option -Popups=0. But this is a bit aggressive as it will apply to all popups.

[Kenn_Tran]

Is it possible to create an event handler to log/print the pop-up message if I do disable all pop-ups?

[Albert]

RoboDK prints a lot of information through the standard output channel starting with the keyword "EventPopupMessage" and then the message.

So you could look for these messages in the stdout channel and show messages when necessary. Keep in mind that blocking popups won't act as blocking if you use your custom integration this way though.