dmpaste does not handle all vector columns correctly. (07 Mar 2008)
The tool gets the range for the first component of the vector column (e.g. chipx=1:4096). When creating the output file, it uses this value for the entire chip column range instead of setting the range for each component of the vector separately. Since the chipy range is very different from the chipx range, subsequent filtering selects no events in the range for any filter.