BSTRtoStringError

i create a project and then try to create a new 3DAtomistic.xsd file but an error occurs——

The document could not be viewed:
The following problem occurred while setting up the Viewer:

- Performing hook-up to Data directories - BSTR could not be converted to narrow CP_ACP string without use of surrogate pairs, in BSTRToString()

anyone can help me fix this?