No(t much) output?

[erikbgithub]

I'm having a folder with freshly generated xhprof files and all of these files I can open via xhprof's index.php. But when I run the script against the directory, I get no output from the file. If I run it against /workdir/*xhprof I get warnings from explode and implode functions about incorrect amount of parameters, and a number as output (4258).

As your readme recommends piping the output of the script to flamegraph.pl I would assume that there would be more output. Is that assumption correct? What could I be missing?