JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. OS. Troubleshooting The following is a list of error messages or warnings which may be displayed and methods used to address them. OS. Method Object Failed OS. Function is not retrieving correct values OS. Type Mismatch OS. Property or Method Not Supported OS. ActiveX Component in Microsoft® Excel OS. User Type Not Defined OS. Files Not Compatible Parent topic: OpenSTAAD