Hi,
This indicates that the call to import OpenVSP failed, meaning that OpenVSP API wasn't compiled in a way that is compatible with the version of Python you're using, or is not in the Python path.
This often happens when the wrong version of Python is used when compiling OpenVSP, but there are several potential issues. This isn't a SUAVE-specific error, so you should direct further questions to the
OpenVSP forum. You can test if OpenVSP will import generally by running "import vsp" in a Python shell.
Tim