Im trying to portray on abaqus a biomechanical study of the female pelvic floor where i made a 2 boxes, the superior box is representing the abdominal cavity and the inferior the pelvic cavity. To simulate the pelvic cavity i added the respective organs that constitute the pelvic cavity. Added fluid cavity in the bladder to simulate the urine and the fluids external at the organs. The error that i get when i try to compile is this: Orientations of hydrostatic fluid elements 116706 instance part-1-1 and 138256 instance part-1-1 are not compatible. How can i solve this problem?

Thnx in advance.