Launcher Starting Error. Specified Cast is not Valid.

[char_family]

http://i40.tinypic.com/2zohpv7.jpg
Hi guys...
Im stuck with this.
I havent played fiesta for maybe two days and i got this.
I've recently been informed of viruses on my computer but i got them removed already.
Can someone please tell me whats going on here and how i can get it to work??? :confused:

[starsilk]

Have you tried to get onto fiesta using something other then the desktop shortcut?