Fixing crash when descriptions not given properly in file

smem_obj.py

@@ -44,13 +44,16 @@ class SMEM_Obj():
             _, short_label, desc = child.to_string()
             # Trim the label based on the object type
             if child.obj_type == ObjType.COND_PRIM:
-                if desc:
+                if desc and desc != "()":
                     str_to_use = desc
                 else:
                     str_to_use = short_label
-                ind = str_to_use.index(" is ")
-                feature, value = str_to_use.replace("(","").replace(")","").split(" is ",maxsplit=1)
-                dict_of_values[feature].add(value)
+                try:
+                    ind = str_to_use.index(" is ")
+                    feature, value = str_to_use.replace("(","").replace(")","").split(" is ",maxsplit=1)
+                    dict_of_values[feature].add(value)
+                except:
+                    print("ERROR: str_to_use missing 'is'. Value was: '"+str(str_to_use)+"'")
             # Merge this dict of sets with results from each branch of children
             child_dict = child.get_referenced_features(dict_of_values)
             for key, val in child_dict.items():
@@ -207,7 +210,11 @@ class SMEM_Obj():
             retval_long += long
             retval_short += short
             if compile_component_descs:
-                retval_desc += "("+desc+")"
+                if desc:
+                    retval_desc += "("+desc+")"
+                else:
+                    retval_desc = None
+                    compile_component_descs = False
         return retval_long, retval_short, retval_desc
     
     def get_op_string(self):