else:
- wxMessageBox("Unable to import VTK, which is a required component "
- "of this demo. You need to download and install the "
+ wxMessageBox("Unable to import VTK, which is a required component\n"
+ "of this demo. You need to download and install the\n"
"Python extension module for VTK from http://www.kitware.com/",
"Import Error")
return None