stream line 1156 column0 XMLparse error ：not well formed （invalid token）

hello,i used my SIMULINK to make a model,i saved it !

But when i open the model this morning， simulink showed a error to me.

【stream line 1156 column0 XMLparse error ：not well formed （invalid token）】

no autosave file !

~_~~_~~_~

please help me,thank you veary much!!!

Answer 1

[ANT R]

my matlab type is 2016a