I am getting an error when trying to run a static analysis on an assembly.  I have searched and tried a variety of methods to get rid of the error, but I cannot seem to find a solution.

The error message says:

"The Iterative Solver stopped.

Numerical difficulties. (Preconditioning failed)

Please check model boundary conditions.

No results saved."

The assembly is fully defined and I have tried to set a variety of fixtures that should constrain the bucket.  Any help or ideas would greatly be appreciated!  Thanks!