Hi Iggy,
It looks like there were no nodes in the patch. If you look at the first two numbers in test.asc, one of them (likely the second) is 0.
That can happen for a few reasons. Perhaps no nodes in your lh.1D.roi is labeled 100, perhaps your column indices in the -input option are incorrect.
If no triangles are found in a patch, the current version still writes out a surface: all node XYZ but no triangles. The new version of the program will no longer produce such output in order to avoid confusion.
cheers,
-ziad
