V-Ray 1.49.02 for SketchUp is widely considered a legacy or unofficial version. Official records from Chaos Group (the developers) state that version 1.49.01 was the final official release in that specific numbering series before transitioning to newer naming conventions.
The Power of V-Ray 1.49.02 for SketchUp
Long answer: Unless you are maintaining a legacy project from 2013, or you have a very specific aesthetic craving for the "old noise," you should not install 1.49.02. Modern V-Ray (5/6/7) is faster, more stable, and infinitely more forgiving. Vray 1.49.02 for Sketchup
Benefits of Using V-Ray 1.49.02 for SketchUp V-Ray 1