It is simple. You can remesh and run. You will not get errors. Try it.
It may be due to the limitation on the number of elements that the software supports for analysis (usually trial versions support 1000 nodes max),
or it may also be due the quality of the elements, if the elements have negative jacobian the analysis will terminate automatically. And also check the boundary conditions and constraints.
If it is the case of element quality, try to correct it or try to bypass the element quality check during analysis.
make sure you have no interfrences and no bad geometry. There are no limitations - other than solid elements and fixed BC's. You might want to try gettig the real simulation program (tools->-add-ins-simulation). If you use the strucrural memeber command it will mesh them as beams - more appropriate.