#12 Crash when using mouse instead of tab for db info

[Steffen Macke]

get an error when I enter a value in the 4th field in the Connection section. In the image below, I was trying to enter 1521 as the Port, and got the error message as I was trying to type the leading "1". I have received the same error when I entered the Post first (no problem), then the User and Password (again, no problem), and the error occurs when I try to enter the final character of the DataBase name.