Imtiaz Gandikota
Ansys Employee
Did any of the sub-designs of current iteration terminate with an error? ls-tasc cannot move forward as it cannot compute DSA results (design sensitivities). This is a known issue. In future versions, ls-tasc will skip DSA computation for that iteration and continue. 

 Please check why ls-dyna run failed and try to fix it. You can manually run DynaOpt.inp file with your fixes and then update finished file with "normal termination". You can then run ls-tasc file again to continue to next iteration.