DMX Send will not turn on

[ParanoidMuse2]

I have a Windows 7 Asus running Show Xpress and a Xpress 512 Plus. I have version 6.333 of Show Xpress. I get a blinking PC Link on the hardware when I plug in and start the program, but the software will not allow me to turn the DMX send on. It stays red and it won't send any data out or control the lights. Am I missing something? It says that it finds 1 universe.

[support]

Please read this: viewtopic.php?f=3&t=1955