error in genetic algorithm of hfss11

hi
Can anybody tell me how to solve following errors with the attached model
(these error occur when i want to use genetic algorithm or parametric analysis in HFSS11)

[error]attempt to change record marked as deleted.

[error]body could not be created for part feedsub because of invalid parameters of this part or some some of this parent part/coordinate system.

[error] acis error "api_check_entity failed for part feedsub"

[error]nullbody found for part feedsub

[error]simulation compeleted with execution error on server local machine.

please guide me