Need to re-position Vray material

Hi. I need to rotate a vray plank material but when I do it does not render correctly. I rotate the texture with the sketchup texture rotate window and it shows up correctly in model. However, when I render, the planks show up in the original position. Any help would be much appreciated. Thanks!

Check if the face are reversed

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Thanks! that was the solution.

Just so you know, many renderers will ignore back sides of faces completely, not just ignore texture positioning. Always edit a model in monochrome mode so that face orientation is obvious. Correct any reversed faces before you apply materials.