cst studi 2011 error message

Hi everyone ,
I would appreciate it if you guys can help me out
during simulation an helical antenna 2 errors messages appear
1.Heahedral Mesh terminated abnormlly
2.Error in calculating solver matrix

Hmmm it means you have Trouble with Mesh Definition go to Global properties and play with the Mesh define LPW 10 and more denser mesh that may solve the issue you can also try to use Tetrahedral Mesh that is more better if you have choice. This is only trouble with Mesh when solved 2nd Error will remove automatically Best Luck