Problem with HFSS

Hi my friends,
I'm trying to simulated one UWB antenna with HFSS, I used Discrete Mode for simulating, but I have alot of error, and simulation was not finish, have error such as error server, out of memory, how I can slove it?

what is the configuration of ur computer system ?
how much RAM in ur system?
after that i will tell u something abt this error.............

I have the same problem. I'm simulation on server with 13GB RAM. I'm afraid of meshing false. please help me!
Thank you!