Reject Travel Request (Enter and Send Msg Error)

Hi Experts.

I Copied standard workflow for approve travel request, and add a decision control to know whether is national or not. It seems that runs fine, but when the user choose to reject the request, the screen of "Enter and Send Msg seems to open" but in a blink the screen disappear. I checked agents, standar task 20000139 but i can't find any error.

Any Suggestions,

Thanks a lot,

Steve.