Comment 5 for bug 1479715

I ran into the same issue.

To improve searchability for this, the messages you see on the console from this are:

ERROR: cannot create wakeup pipe

(Pidgin:8924): GStreamer-CRITICAL **: gst_poll_get_read_gpollfd: assertion 'set != NULL' failed

(Pidgin:8924): GStreamer-CRITICAL **: gst_poll_write_control: assertion 'set != NULL' failed

(Pidgin:8924): GStreamer-CRITICAL **: gstsystemclock: write control failed in wakeup_async: 24:Too many open files

(Pidgin:8924): GStreamer-CRITICAL **: gst_poll_free: assertion 'set != NULL' failed