Due to an issue with the detection of the number of cores for computers that have 16 cores with hyperthreading (or more), the Plaxis calculation kernel will fail to run for:
This issue occurs when having a minimum of 32 physical cores, or a minimum of 16 cores + hyperthreading (which gives 32 logical cores).
This issue has been fixed since PLAXIS 3D 2013.01, and now also since PLAXIS 2D AE.
For older PLAXIS 3D versions, the solver can be changed to Picos or Classic.
An option to run the calculation would be to perform the calculation on a machine that has less cores available.