Abaqus - ELBOW elements with HPI and HPE: ERROR

Hi there!

I've been using Abaqus 2018 for a couple months now and, trying to run a model with ELBOW31 elements subjected to Hydrostatic Pressure loads (*DLOAD HPI and HPE), I get the following error in '.msg' file:


---------- RUNTIME EXCEPTION HAS OCCURED ----------

standard.exe / rank 0 / thread 0 encountered a system exception 0xC0000005 (EXCEPTION_ACCESS_VIOLATION)


The same model runs successfully in Abaqus 6.14.


Does anybody have any idea?