ipeextract version (return code: 0)
Could not find XML stream.
Error during extraction of XML stream.
ipeextract (return code: 1)
Usage: ipeextract ( <input.pdf> | <input.eps> ) [<output.xml>]
Ipeextract extracts the XML stream from a PDF or Postscript file
generated by any version of Ipe 6 or Ipe 7.