Quote:
Originally Posted by kovidgoyal
That error is harmless. It just indicates that flushing stdout and stderr just before the process exits is failing in the viewer process. Just ignore it.
I'll add some code to suppress it for then next release.
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Thanks, Kovid.
I thought I might have done something wrong and hadn't installed a component of the DRM package correctly, or else that something had not download completely when I installed calibre and Alf.