一个中承式钢桁拱的计算模型，运行之后出现错误：
-----------------------------------------S T A R T I N G S O L U T I O N

MULTI-FRONTAL SOLVER
AVAILABLE MEMORY = 1342.9 MBYTES
ENTRY PHASE FOR RENUMBERING
ENTRY NUMBERING_EQN
ENTRY FORM_STIFF_MASS_LOAD
THE INDIVIDUAL ELEMENT STIFFNESS AND LOAD MATRICES WILL NOW BE FORMED.
ELEMENT NO. : 200 OF 3522
不知道是哪些方面出了问题，希望各位大侠不吝赐教！