need help on HFSS filter design

Hello all,
I am trying to design Filter in HFSS with a bandwidth 4 to 9.7 GHz.I need help regarding my design. I am optimizing my design but it give me errors
( [error] Unable to save current mesh data for simulation: Setup1 (5:05 PM May 11, 2011)
[error] Unable to save current mesh data for simulation: Setup1 (5:05 PM May 11, 2011)
[error] Optimization Analysis failed - Solver returned error code. (5:05 PM May 11, 2011)
)
and stops optimization kindly review my design to see what i have done wrong.

thanks.