If these work temporarily, continue reading to fix it permanently.
Try these fixes in order (90% success rate). Vray Neui Has Encountered A Problem And Needs To Close
Last updated: October 2025. Works for Vray 5, 6, and 7. If these work temporarily, continue reading to fix
This error typically occurs when launching 3ds Max, SketchUp, Rhino, or Revit, or sometimes even when simply opening the V-Ray Asset Editor. The term "Neui" stands for —the core framework that powers V-Ray’s modern interface (frames, buttons, sliders, and the frame buffer). When this crashes, your render engine becomes effectively blind and unusable. If these work temporarily
This is the most common host for this error.