Newish user of Lubuntu 16.10 trying desperately to shed MS Windows. HELP button on more than one utility launches yelp with correct title in title bar, but help window is blank. HOWEVER, mouse pointer can find links and hovering displays correct tool-tip. Clicking "link" will go to proper page (title bar changes).
Launching in terminal using
yelp help
gives many error messages like
(yelp:3581): Gtk-WARNING **: Theme parsing error: gtk-lubuntu.css:66:13: The :insensitive pseudo-class is deprecated. Use :disabled instead.
.
.
.
(WebKitWebProcess:3597): Gtk-WARNING **: Theme parsing error: gtk-lubuntu.css:66:13: The :insensitive pseudo-class is deprecated. Use :disabled instead.
.
.
.
I/O error : Attempt to load network entity http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd.
.
.
.
(yelp:3581): Gtk-CRITICAL **: gtk_accel_label_set_accel_closure: assertion 'gtk_accel_group_from_accel_closure (accel_closure) != NULL' failed
but yelp runs as described above. I can't find any place for configuration settings. I would appreciate any and all help with yelp help.