Upgrading from 5.0.0 to 5.0.1 produces this error - please could someone help?

---
  • 5.0.1
  • 5.0.1
  • vbulletin-style.xml:
  • vbulletin-settings.xml:
  • 5.0.1
  • 5.0.1
  • vbulletin-language.x
...