I’m sure that PEBKAC but is there no way to tile a image in cycles? Seems I have to UV wrap things but there is no way to tile a small image other than converting that image to a pattern in Gimp and create a huge image with the pattern tiled.
I think your scale is just too big. Here is a tiled plane with 5 tiles and your image.
Edit: packed texture (ignore the cyclestile.blend at the bottom) cyclestile-packed.blend (576 KB)
Your scaling is off the charts…2000? Try to first make sure you have applied scale to the object your applying the texture to. … object…apply… scale.
Then try and use a setting like 4 for the scaling… than increase in increments… like maybe 20 … than 100 ect… I’ve probably gone up to 100 at some point… but 2000 seems way to much. I would leave z at 1.0 … just adjust scale for X and Y