Sorry for the question, its not really a problem, the 347'er works great with many more fps performance and good lod clamp, but i don't know why not working with 355.
I think it still working for me... the effect is sometimes small depending on the track but I did a quick comparison with and without on a MOD track and the white lines are best with a LOD patched v 355.82.
However the patch tools were bound to be obsolete one day, so if its not working I would not be surprised.
It would be nice to confirm this... then the last working driver version could be known and recommended.