Please restart SketchUp after upgrading Enscape. If you're in doubt about the version you're currently using, take a look at the About window.
Do you see the wrong materials every time you start Enscape or only after changing your model while Enscape is open?
Are the materials completely wrong (e.g. stone texture instead of wood texture) or only slightly different? The latter can always happen with lighting & exposure.
If you want me to investigate further please send your model to me (or our official support email).