PDF to..., with Calibre 4.2

PDF conversion to epub or fb2, does not work, independent of the source file or / and the settings used in the conversion.
The funny thing is that opening the PDF with the Caliber viewer, it presents it without problems and in a few seconds.
I attach a PDF and copy of the details of the task, after stopping it after thirty minutes.
With Windows 10

Attached Files

	El Zarco.pdf (290.1 KB)
	Details of the task.txt (6.0 KB)