ERROR [2012]: IMPROPER LINEAR EQUATION SOLVER SELECTED. TRY OTHER SOLVERS OR USE AUTO SELECTION

Cause

This error is generated when the selected equation solver is not suitable for a particular analysis type.  (Example: when the iterative AMG solver is selected for eigenvalue analysis)

Analysis Type

All types of analyses except for explicit dynamic analysis

Related Menu

Tools >> Option >> Analysis/Results >> Analysis Control >> Equation Solver...

Remedy

For eigenvalue analysis (Modal, Buckling), select a direct solver (dense solver or multifrontal solver), or use the Auto selection option.