why MODEL step meets ERROR??
 

hello all. iam sending a wonder of mine when iam doing an exercise of statis structure in ansys.
1/
BUT when i come the step of MODEL . it comes ERRORs after double-clicking on model 1st, then model box is turnt off later.
WHY?? WHY 2 1ST STEPS IS OKAY BUT MODEL???
PLEASE, GIVE ME ANY INFO FOR THIS ERROR??

2/annother excersise, i hav a BIG problem when using GEOMETRY to DRAW. it means that i CAN NOT CLICK to DRAW AS USUALLY IN AUTOCAD. WHY???

MY HEAD IS FULL OF WHY?????????
PLEASE.