gv prints a warning message at startup: Warning: translation table syntax error: Unknown keysym name: apLineDel Warning: ... found while parsing '<Key>apLineDel: GV_Page(page+5) ' .. and stops parsing the key bindings following the offending one. Most annoying is that PageUp and PageDown will not work. X11 version is xorg-x11-6.8.1.901. Attached patch from FreeBSD (see URL) fixes the problem for me.
Created attachment 48273 [details, diff] Patch for gv_misc_res.dat
The problem was actually due to a spurious XKEYSYMDB environment variable in our local profile. Sorry for the inconvenience. Resolving as invalid.