Hey guys, I have following problem: I make structural analysis for an assembly but it fails after some time and following message is being displayed:  "Iterative solver stopped. The solver has numerical problems. The devices may not be adequate for the model. No results saved." 

What I do is a plate with some holder (2 parts, 1 fixed, the other one in fixed relations to the 1). Applied load: pressure and balanced forces (if only calculation is correct). Mesh: curvature based with l max = 2.0mm.

Any idea why it could appear? Thanks in advance!