Recently, after my win10 OS update to version 1803, and the matlab2017b , KV MCU toolboxs reintalled. The bad news came from inoculation. just open the example model, the matlab windows shows warning message as attached pic. and i get many error messages when compling the model ,as the addached txt file. refresh simulink library can not clear this warning messages. and the matlab2017b , KV MCU toolboxs runing well before OS update & reintalled.