AZTS - 2011-08-17

Hi,
When I run the created exe from launch4j I get a pop up saying "An error occurred while starting the application, Cannot create a file when that file already exists." and then the application loads. How do I get rid of this warning? And what is it about. I've seen references to launch4j-tmp folder but I have the option for custon process names disabled and I could create this folder and file no problem when I tested it.
Thanks,
A