Warning 3489 when run FEKO solver

When i run the Feko solver to simulate my antena, these warnings apears, and it doesm't let me complete the simutation. What does it mean, how can I fix it?

WARNING 3489: Too many integration intervals are required for the potentials
WARNING 3489: Too many integration intervals are required for the potentials
WARNING 36752: No further output of warning 3489